Engineering Glossary

From fundamental principles to cutting-edge practices, this glossary covers the full spectrum of software engineering terminology.

DevOps
Cloud Computing
Git
Containerization & Orchestration

"As code"

Defining and managing infrastructure, configurations, or processes using code, enabling version control, automation, and reproducibility.
DevOps

"Nines"

Measure of system availability, expressed as a percentage. E.g., "five nines" means 99.999% uptime, allowing for minimal downtime.
DevOps

"Single Pane of Glass"

Unified display or interface that integrates data from multiple sources, providing a comprehensive view of system status or operations.
DevOps

A/B Testing

Comparing two versions of a webpage or app to determine which performs better, based on user interaction and conversion rates.
DevOps

AIOps (Artificial Intelligence Operations)

Using AI and machine learning to enhance IT operations, automating tasks and providing insights for better decision-making.
DevOps

ALB (Application Load Balancing)

Distributes incoming application traffic across multiple targets to improve availability and fault tolerance.
DevOps

API

Application Programming Interface; set of protocols and tools for building software applications and enabling communication between systems.
DevOps

API Discovery

Process of identifying and documenting available APIs within an organization or from external sources.
DevOps

API Endpoint

Specific URL where an API can be accessed and where requests are sent to interact with a server or service.
DevOps

API Gateway

Manages, secures, and routes API requests, acting as a single entry point for multiple microservices or backend systems.
DevOps

API Management

Process of creating, publishing, documenting, and analyzing APIs in a secure environment.
DevOps

API Monitoring

Tracking API performance, availability, and usage to ensure optimal functionality and identify issues.
DevOps

API Response Time

The duration between sending a request to an API and receiving the response, crucial for performance evaluation.
DevOps

API Security

Measures and practices to protect APIs from unauthorized access, attacks, and data breaches.
DevOps

API Versioning

Managing different versions of an API to maintain compatibility while allowing updates and improvements.
DevOps

ASG (Auto Scaling Group)

Feature in cloud computing that automatically adjusts the number of instances based on defined conditions.
DevOps

ASP.Net Core Monitoring

Observing and analyzing the performance and behavior of applications built with ASP.Net Core framework.
DevOps

ATO (Account Takeover)

Type of identity theft where an attacker gains unauthorized access to a user's account.
DevOps

AWS (Amazon Web Services)

Cloud computing platform offering a wide range of services for computing, storage, networking, and more.
DevOps

AWS App Development Tools

Suite of tools provided by AWS for building, testing, and deploying applications on their cloud platform.
DevOps

AWS CLI

Command-line interface for interacting with AWS services, allowing users to manage resources and automate tasks.
DevOps

AWS CloudWatch

Monitoring and observability service for AWS resources and applications, providing metrics, logs, and alarms.
DevOps

AWS CodeDeploy

Fully managed deployment service that automates software deployments to various compute services.
DevOps

AWS CodePipeline

Continuous delivery service for fast and reliable application and infrastructure updates.
DevOps

AWS EC2

Elastic Compute Cloud; scalable computing capacity in the AWS cloud for running virtual servers.
DevOps

AWS ELB

Elastic Load Balancing; automatically distributes incoming application traffic across multiple targets.
DevOps

AWS Lambda

Serverless compute service that runs code in response to events and automatically manages the underlying resources.
DevOps

AWS Managed Services

Ongoing management of AWS infrastructure, allowing customers to focus on their applications and business.
DevOps

AWS Monitoring

Process of tracking and analyzing the performance, health, and usage of AWS resources and applications.
DevOps

AWS RDS

Relational Database Service; managed service for setting up, operating, and scaling relational databases in the cloud.
DevOps

AWS RDS Postgres Monitoring

Tracking and analyzing the performance and health of PostgreSQL databases running on AWS RDS.
DevOps

AWS S3

Simple Storage Service; object storage service offering industry-leading scalability, data availability, and performance.
DevOps

AWS S3 Cost Optimization

Strategies and practices to reduce costs associated with storing and accessing data in AWS S3.
DevOps

AWS Security

Set of tools, services, and best practices for protecting data, applications, and infrastructure in the AWS cloud.
DevOps

Acceptance Test-Driven Development (ATDD)

Software development approach where acceptance tests are written before the code, guiding implementation.
DevOps

Active Directory

Microsoft's directory service for Windows domain networks, managing users, computers, groups, and other objects.
DevOps

Advanced Rate Limiting

Technique to control the rate of incoming requests to an API or service, preventing overload and ensuring fair usage.
DevOps

Agent

Software component that performs automated tasks, often used in monitoring, data collection, or system management.
DevOps

Agile

Iterative approach to software development emphasizing flexibility, collaboration, and rapid delivery of working software.
DevOps

Agile Manifesto

Document outlining values and principles of Agile software development, prioritizing individuals, working software, and adaptability.
DevOps

Agile Methodology

Set of practices based on Agile principles, focusing on iterative development, team collaboration, and customer feedback.
DevOps

Agile Organization

Company structure that emphasizes adaptability, quick response to change, and continuous improvement.
DevOps

Agile Project Management

Applying Agile principles to project management, focusing on iterative planning, frequent delivery, and team empowerment.
DevOps

Agile Software Development

Iterative approach to building software, emphasizing flexibility, collaboration, and rapid delivery of working features.
DevOps

Ajax Requests

Technique for creating fast, dynamic web pages by exchanging small amounts of data with the server behind the scenes.
DevOps

Alerting

System for notifying relevant personnel about critical events or issues in IT infrastructure or applications.
DevOps

Amazon Aurora

Fully managed relational database engine compatible with MySQL and PostgreSQL, designed for the cloud.
DevOps

Amazon Web Services (AWS)

A cloud platform offering a wide range of services like computing power, storage, and databases, enabling scalable, flexible solutions.
DevOps

Android Deployment

Process of distributing and installing Android applications on devices or making them available through app stores.
DevOps

Android Emulator

Software tool that simulates Android devices on a computer for testing and development purposes.
DevOps

Android Studio

Official integrated development environment (IDE) for Android app development, offering a comprehensive set of tools and features.
DevOps

Anomaly Detection

Process of identifying unusual patterns or behaviors that deviate from expected norms in data or system behavior.
DevOps

Ansible

Open-source automation tool for configuration management, application deployment, and task automation.
DevOps

Antifragile

Quality of systems that gain strength from disorder or stress, becoming more resilient in the face of challenges.
DevOps

Apache

Popular open-source web server software that can run on various platforms, known for its reliability and extensive feature set.
DevOps

App Store Connect

Apple's platform for managing apps, viewing analytics, and submitting to the App Store.
DevOps

AppDynamics

Application performance management and IT operations analytics platform for monitoring and optimizing application performance.
DevOps

Application Containerization

Packaging software code and dependencies into lightweight, portable containers for consistent deployment across environments.
DevOps

Application Firewall

Security system that monitors, filters, and blocks HTTP/HTTPS traffic to and from web applications.
DevOps

Application Infrastructure

The hardware, software, and networking components required to run and support an application.
DevOps

Application Lifecycle Management

Process of managing an application from ideation through retirement, including development, testing, and maintenance.
DevOps

Application Migration

Process of moving an application from one environment to another, often involving cloud or platform transitions.
DevOps

Application Performance Monitoring (APM)

Tools and practices for monitoring and managing the performance and availability of software applications.
DevOps

Application Platform

Software framework that provides a foundation for developing and running applications, often including runtime services and APIs.
DevOps

Application Program Interface (API)

Set of protocols, routines, and tools for building software applications and enabling communication between different software systems.
DevOps

Application Release Automation (ARA)

Process of packaging and deploying applications automatically across various environments and platforms.
DevOps

Application Security

Measures taken to improve the security of an application by finding, fixing, and preventing vulnerabilities.
DevOps

Application Team

Group responsible for developing, maintaining, and improving a specific application or set of applications.
DevOps

Application Whitelisting

Security practice that specifies which applications are permitted to run on a system, blocking all others.
DevOps

Application Workflow

Sequence of tasks or processes within an application, often automated to improve efficiency and consistency.
DevOps

Aptly

Debian repository management tool that makes it easy to mirror existing repositories and create new ones.
DevOps

Artifact

Any file or object produced during the software development process, such as compiled code, documentation, or test results.
DevOps

Artifactory

Repository manager for storing and managing software packages, artifacts, and dependencies.
DevOps

Artifacts

Byproducts of software development, including executables, libraries, documentation, and other files created during the process.
DevOps

Artificial Intelligence (AI)

Computer systems capable of performing tasks that typically require human intelligence, such as learning and problem-solving.
DevOps

Asgard

Open-source web-based tool for cloud management and application deployment, primarily used with Amazon Web Services.
DevOps

Asterisk

Open-source framework for building communications applications, particularly used for creating custom telephone systems.
DevOps

Atom

Open-source text and source code editor developed by GitHub, known for its customizability.
DevOps

Attack Surface

Total sum of vulnerabilities in a given system that are accessible to an attacker.
DevOps

Attack Vector

Method or pathway used by a malicious actor to gain unauthorized access to a computer or network.
DevOps

Audit Log

Chronological record of system activities, providing a trail for tracking user actions and system events.
DevOps

Auditd

Linux daemon that monitors and logs system activities to detect security violations.
DevOps

Authentication Factor

Piece of information or process used to verify a user's identity, such as passwords, biometrics, or security tokens.
DevOps

Automated Builds

Process of compiling source code into executable software without manual intervention, often part of CI/CD pipelines.
DevOps

Automation

Use of technology to perform tasks with minimal human intervention, improving efficiency and reducing errors.
DevOps

Autonomy

Degree of independence and self-governance given to teams or systems in making decisions and performing tasks.
DevOps

Awsbox

Tool for deploying node.js apps to Amazon Web Services, simplifying the process of setting up and managing instances.
DevOps

Azure

Microsoft's cloud computing platform providing a wide range of services for building, testing, deploying, and managing applications.
DevOps

Back-end

Server-side of a website or application, responsible for data storage, security, and business logic.
DevOps

Backup

Copy of data created to protect against loss or damage, often stored separately from the original for recovery purposes.
DevOps

Bad/Threat Actor

Individual or entity that attempts to exploit vulnerabilities in systems or networks for malicious purposes.
DevOps

Baklava code

Term describing code that has too many layers, making it overly complex and difficult to understand or maintain.
DevOps

Bamboo

Continuous integration and deployment server by Atlassian, automating the building, testing, and deployment of software.
DevOps

Bare-metal

Physical computer server dedicated to a single tenant, not virtualized or shared among multiple users.
DevOps

Barkeep

Open-source web-based code review system that facilitates collaborative code reviews and discussions.
DevOps

Bash

Unix shell and command language, widely used for scripting and automating tasks in Unix-like operating systems.
DevOps

Bastion host

Specially designed system on a network specifically intended to withstand attacks, usually placed at the edge of a network.
DevOps

Bazel

Open-source build and test tool that enables fast, reproducible builds across multiple platforms and languages.
DevOps

Beats

Lightweight data shippers for various types of data, part of the Elastic Stack for log and metrics collection.
DevOps

Behavior-Driven Development (BDD)

Software development approach that focuses on defining the behavior of an application based on user stories.
DevOps
Git Pull --Rebase

Git Pull --Rebase

A variation of Git pull that fetches remote changes and rebases local commits on top of them instead of merging.
Git Push --Force-with-Lease

Git Push --Force-with-Lease

A safer alternative to force push, which only updates the branch if it hasn't been modified since your last fetch.
Git Range-diff

Git Range-diff

A command that compares the changes between two commit ranges, useful for reviewing rebased branches.
Git Read-tree

Git Read-tree

A low-level command that reads tree objects into the index, used in complex merging scenarios.
Git Reflog

Git Reflog

A log of all reference updates in a repository, useful for recovering lost commits or branches.
Git Reflogs

Git Reflogs

Same as Git Reflog, logs that record when the tips of branches and other references were updated in the repository.
Git Refs Storage

Git Refs Storage

The system Git uses to store references (like branches and tags) as files in the .git directory.
Git Refspec

Git Refspec

A string that specifies the mapping between remote and local references when fetching or pushing.
Git Remote Add

Git Remote Add

Adds a new remote repository to your local Git configuration, associating a name with a URL.
Git Remote Prune

Git Remote Prune

A command that removes remote-tracking branches that no longer exist on the remote repository.
Git Remote Remove

Git Remote Remove

Removes a remote repository from your local Git configuration, deleting its associated references.
Git Replace

Git Replace

A feature allowing one Git object to be transparently used in place of another, useful for history rewriting.
Git Rerere (Reuse Recorded Resolution)

Git Rerere (Reuse Recorded Resolution)

A feature that remembers how you resolved merge conflicts and automatically reapplies the resolution.
Git Reset

Git Reset

A command used to undo changes by moving the current branch head to a specific commit.
Git Reset --Hard

Git Reset --Hard

A Git reset option that updates the working directory and staging area to match the specified commit.
Git Reset --Soft

Git Reset --Soft

A Git reset option that moves the HEAD to a specified commit without changing the working directory or staging area.
Git Rev-list

Git Rev-list

A command that lists commit objects in reverse chronological order, often used as a basis for other commands.
Git Rev-parse

Git Rev-parse

A command used to parse Git revision syntax and return the corresponding object name.
Git Revert

Git Revert

A command that creates a new commit that undoes the changes made by a previous commit.
Git Rm

Git Rm

A command to remove files from both the working directory and the Git repository.
Git Shallow Clone

Git Shallow Clone

A clone that only fetches a limited number of commits, reducing download size and time for large repositories.
Git Shortlog

Git Shortlog

A command that summarizes git log output, typically used to create release announcements.
Git Signed Commits

Git Signed Commits

Commits that are cryptographically signed to verify the identity of the committer and ensure integrity.
Git Signed Tags

Git Signed Tags

Tags that are cryptographically signed to verify the identity of the tagger and ensure the tag's integrity.
Git Squash

Git Squash

The process of combining multiple commits into a single commit, often used to simplify history before merging.
Git Stash Apply

Git Stash Apply

A command that applies a stored stash to the working directory without removing it from the stash list.
Git Stash Pop

Git Stash Pop

A command that applies a stored stash to the working directory and removes it from the stash list.
Git Status

Git Status

A command that displays the state of the working directory and the staging area.
Git Submodule

Git Submodule

A repository embedded within another repository, allowing you to keep a Git repository as a subdirectory of another Git repository.
Git Submodule Foreach

Git Submodule Foreach

A command that executes a specified shell command for each initialized submodule in a Git repository.
Git Subtree

Git Subtree

A feature for managing nested repositories as subdirectories of a parent repository, an alternative to submodules.
Git Update-index

Git Update-index

A low-level Git command that manipulates the staging area, updating file information and preparing changes for commit.
Git Wire Protocol

Git Wire Protocol

The communication protocol used between Git clients and servers for efficient data transfer.
Git Worktree

Git Worktree

A feature allowing multiple working trees to be attached to the same repository, useful for working on different branches simultaneously.
Git Worktree Add

Git Worktree Add

Creates a new working tree associated with the repository, allowing work on multiple branches simultaneously.
Git Worktree List

Git Worktree List

A command to list details of each working tree associated with the repository, showing paths and branch information.
Git Write-tree

Git Write-tree

A low-level Git command that creates a tree object from the current index, representing a directory structure.
Git archive

Git archive

A Git command used to create an archive (zip or tar) of files from a specified commit, useful for creating release packages.
Git branch naming conventions

Git branch naming conventions

Agreed-upon patterns for naming branches to improve organization and clarity in collaborative projects.
Git cat-file

Git cat-file

A command to examine the contents and type of Git objects, useful for inspecting repository internals.
Git cherry-pick --continue

Git cherry-pick --continue

A command to resume the cherry-pick process after resolving conflicts in a paused cherry-pick operation.
Git config scopes (system, global, local)

Git config scopes (system, global, local)

Levels at which Git configuration can be set: system (all users), global (user), and local (repository).
Git count-objects -v

Git count-objects -v

A command providing detailed statistics about the number and size of objects in a Git repository.
Git credential helpers

Git credential helpers

Mechanisms to securely store and retrieve credentials for Git operations, reducing manual authentication.
Git diff drivers

Git diff drivers

Custom scripts that determine how Git should generate diffs for specific file types.
Git filter-repo

Git filter-repo

A versatile tool for rewriting Git repository history, offering more power and flexibility than git filter-branch.
Git gc aggressive

Git gc aggressive

A more thorough garbage collection process in Git, optimizing repository storage and performance.
Git hash-object

Git hash-object

A low-level Git command that computes the object ID (SHA-1 hash) for a given file or string, used in Git's internal storage.
Git hooks (client-side and server-side)

Git hooks (client-side and server-side)

Scripts triggered by specific events in Git workflows, used to automate tasks or enforce policies.
Git index (staging area)

Git index (staging area)

The intermediate area in Git where changes are prepared before committing, also known as the staging area.
Git loose objects

Git loose objects

Individual, uncompressed Git objects stored separately in the object database before being packed.
Git ls-tree

Git ls-tree

A command to list the contents of a tree object in Git, showing files and subdirectories.
Git merge drivers

Git merge drivers

Custom scripts defining how Git should handle merges for specific file types or patterns.
Git mktree

Git mktree

A low-level Git command that creates a tree object from a specific index or tree listing.
Git object types (blob, tree, commit, tag)

Git object types (blob, tree, commit, tag)

The four fundamental object types used by Git to store repository data and history.
Git pack-refs

Git pack-refs

A command to pack references into a single file for improved performance in repositories with many references.
Git packfiles

Git packfiles

Compressed files containing multiple Git objects, optimizing storage and transfer efficiency in repositories.
Git post-receive hooks (server-side)

Git post-receive hooks (server-side)

Server-side scripts that run after commits have been accepted, often used for notifications or deployments.
Git pre-receive hooks (server-side)

Git pre-receive hooks (server-side)

Server-side scripts that run before pushed commits are accepted, used to enforce policies or checks.
Git protocol v2

Git protocol v2

An improved version of the Git transfer protocol, offering better performance and feature negotiation.
Git rebase --onto

Git rebase --onto

A command to move a series of commits to a new base commit, useful for changing the parent of a branch.
Git reflog expire

Git reflog expire

A command to remove old entries from the reflog, useful for cleaning up Git history and freeing space.
Git repack

Git repack

A command to combine all loose objects in a repository into packfiles, improving storage efficiency.
Git reset (soft, mixed, hard)

Git reset (soft, mixed, hard)

Commands to undo changes in Git, with varying impacts on the working directory and staging area.
Git secret management

Git secret management

Techniques and tools for securely storing and accessing sensitive information in Git repositories.
Git show-ref

Git show-ref

A command that lists references in a Git repository along with their associated commit hashes.
Git sparse-checkout

Git sparse-checkout

A feature allowing users to check out only a subset of files from a repository, saving space and time.
Git verify-pack

Git verify-pack

A command to validate the contents of Git pack files, ensuring data integrity in the object database.
GitHub App

GitHub App

An application that can be installed directly on organizations and user accounts to extend GitHub's functionality.
GitHub Flavored Markdown

GitHub Flavored Markdown

A version of Markdown with additional features specifically supported on GitHub.
GitHub Importer

GitHub Importer

A tool for importing repositories to GitHub from other version control systems or source code hosts.
GitHub Issues

GitHub Issues

A feature in GitHub for tracking tasks, enhancements, and bugs for a project.
GitHub Jobs

GitHub Jobs

A platform for posting and finding software development jobs, integrated with GitHub profiles, that was discontinued in 2021.
GitHub Marketplace

GitHub Marketplace

A platform for developers to sell and buy integrations for GitHub, enhancing workflow and productivity.
GitHub Pages

GitHub Pages

A static site hosting service that takes files directly from a GitHub repository to publish websites.
GitHub Wiki

GitHub Wiki

A collaborative documentation feature in GitHub repositories, allowing easy creation and editing of project documentation.
GitHub flow

GitHub flow

A lightweight, branch-based workflow that supports teams and projects where deployments are made regularly.
GitLab flow

GitLab flow

A version control workflow that combines feature-driven development and feature branches with issue tracking.
Gitflow

Gitflow

Branching model for Git that defines a strict branching model designed around project releases.
Gitk (Git Repository Browser)

Gitk (Git Repository Browser)

A graphical interface for viewing Git repositories, providing a visual representation of commit history.
GraphQL

GraphQL

Query language for APIs and a runtime for executing those queries with existing data.
HEAD

HEAD

A pointer in Git that refers to the latest commit in the current checked-out branch.
Hello, World

Hello, World

A simple program often used as an introduction to a new programming language or environment, including Git tutorials.
Hotfix branching

Hotfix branching

A method for quickly patching production releases by branching directly from the main branch or a tag.
Index

Index

Also known as the staging area, where changes are prepared before committing in Git.
Issue templates

Issue templates

Predefined structures for creating new issues in Git repositories, ensuring consistent and complete information.
Jekyll

Jekyll

A static site generator often used with GitHub Pages to create websites from Markdown files in a Git repository.
Jekyll Theme Chooser

Jekyll Theme Chooser

A tool in GitHub Pages that allows users to easily select and apply pre-designed themes to their Jekyll sites.
LFS

LFS

Git Large File Storage, an extension for versioning large files in Git repositories.
Linguist

Linguist

A library used by GitHub to detect the programming languages used in repositories.
Markdown

Markdown

A lightweight markup language commonly used for documentation in Git repositories.
Master

Master

Formerly the default name for the primary branch in Git repositories, now often replaced by 'main'.
Merge

Merge

The process of combining changes from different branches into a single branch, integrating multiple lines of development.
OAuth app

OAuth app

An application that uses the OAuth protocol to access Git platform APIs on behalf of users.
OAuth token

OAuth token

A secure string used for authentication in Git operations, allowing access to resources without sharing passwords.
Origin

Origin

The default name for the remote repository from which a local repository was cloned.
Patch

Patch

A file describing changes between versions, used to share and apply modifications across different Git repositories.
Pull

Pull

A Git command that fetches changes from a remote repository and merges them into the current branch.
Pull Request

Pull Request

A method of submitting contributions to a Git project, proposing changes from a forked repository or branch.
Pull request templates

Pull request templates

Customizable files that automatically populate the body of new pull requests, guiding contributors.

Workflows as Code

Defining and managing complex business processes using code in cloud environments.

Workload Placement Optimization

Techniques for efficiently distributing applications and data across cloud resources.

Workload Portability

Ability to move applications and data between different cloud environments with minimal modifications.

Workload-Aware Data Placement

Optimizing data storage location based on application requirements in cloud environments.

Zero Trust Network Access (ZTNA)

Security model that requires strict identity verification for every person and device accessing cloud resources.

Zero Trust Security Model

Approach assuming no automatic trust, requiring continuous verification in cloud environments.

Zero UI Cloud Interactions

Interfacing with cloud services through ambient intelligence, without traditional user interfaces.

Zero-Knowledge Proof Services

Cloud-based cryptographic methods allowing data verification without revealing the data itself.

Zero-Knowledge Proof Systems

Cryptographic protocols enabling data verification without disclosing the actual data in cloud environments.

Zero-Trust Microsegmentation

Fine-grained network segmentation approach in cloud environments, limiting lateral movement of threats.

Zero-Trust Network Access (ZTNA)

Security framework requiring strict authentication and authorization for all cloud network access.

Zoned Namespaces (ZNS) SSDs

Storage devices optimized for cloud workloads, improving performance and reducing write amplification.

eBPF (extended Berkeley Packet Filter)

Technology for running sandboxed programs in the Linux kernel, often used in cloud environments.

eBPF-based Networking

Using eBPF technology to enhance network performance and security in cloud environments.

Pod Anti-Affinity

Kubernetes scheduling constraint that prevents pods from being co-located with other pods based on labels.

Pod Disruption Budget

Kubernetes object that limits the number of pods of a replicated application that can be down simultaneously.

Pod Lifecycle

Stages a pod goes through from creation to termination, including pending, running, succeeded, failed, and unknown phases.

Pod Monitors

Custom resources in Prometheus Operator for declaratively defining how groups of pods should be monitored.

Pod Networking

Mechanisms and configurations for enabling network communication between pods in a Kubernetes cluster.

Pod Overhead

Additional resources consumed by pod infrastructure on top of the container requests and limits.

Pod Phase

High-level summary of where a pod is in its lifecycle, used for pod status reporting and monitoring.

Pod Priority and Preemption

Kubernetes feature allowing importance-based scheduling and eviction of pods when resources are constrained.

Pod Security Context

Kubernetes object defining privilege and access control settings for a pod or container, enhancing security.

Pod Security Policies (PSP)

Deprecated Kubernetes feature for cluster-level control over pod security sensitive aspects.

Pod Security Standards

Kubernetes-defined levels (privileged, baseline, restricted) of security settings for pods.

PodDisruptionBudget

Kubernetes object limiting the number of pods that can be down simultaneously for a given application.

PodSandbox

Isolation boundary for one or more containers in a pod, providing shared kernel namespaces and cgroups.

PodSecurityPolicy

Deprecated cluster-level resource controlling security-sensitive aspects of pod specification.

Podman for Daemonless Containers

Tool for managing containers and images without a container daemon, compatible with Docker CLI.

Polaris for Best Practices Validation

Open-source tool for checking Kubernetes resources against configurable best practices, enhancing reliability.

Polyglot Persistence

Use of multiple data storage technologies in microservices architectures to best fit varying data storage needs.

Port Address Translation (PAT)

Network address translation technique used in container networking for mapping ports, enabling external access.

Port Mapping

Process of forwarding a network port from the host to a container, enabling external access to containerized services.

Portainer for Container Management

Web-based management UI for Docker environments, simplifying container operations and monitoring.

Portworx

Cloud-native storage platform providing persistent storage for containerized applications in multi-cloud environments.

Portworx PX-Store

Software-defined storage solution by Portworx for containerized stateful applications in Kubernetes.

Predicates

Kubernetes scheduling policies that filter out nodes that cannot run a pod, based on resource requirements and constraints.

Preemption

Kubernetes process of evicting lower-priority pods to schedule higher-priority pods when resources are constrained.

PrintColumn

CustomResourceDefinition feature for defining custom columns in kubectl output for custom resources.

Priorities

Kubernetes scheduling policies that rank nodes that have passed the predicate phase, determining the best placement for a pod.

Priority Classes

Kubernetes objects defining the relative importance of pods, used in scheduling and preemption decisions.

Priority and Preemption

Kubernetes feature allowing pods to be assigned different priorities, influencing scheduling and eviction decisions.

Privileged Containers

Containers running with elevated permissions, potentially accessing host resources and devices.

Progressive Delivery

Deployment strategy gradually rolling out changes to a subset of users or servers, monitoring for issues.

Project Calico eBPF Datapath

High-performance networking mode in Calico using extended Berkeley Packet Filter for packet processing.

Projected Volumes

Kubernetes volume type that maps several existing volume sources into the same directory, combining multiple configs.

Prometheus

Open-source systems monitoring and alerting toolkit, widely used for Kubernetes and container monitoring.

Prometheus Alertmanager

Component of Prometheus handling alerts, including silencing, inhibition, aggregation, and notifications.

Prometheus Operator

Kubernetes operator that makes it easy to deploy and manage Prometheus instances, simplifying monitoring setup.

Prometheus Pushgateway

Component allowing ephemeral and batch jobs to expose their metrics to Prometheus, enhancing monitoring coverage.

Prometheus Remote Write

Feature allowing Prometheus to send samples to compatible remote storage systems, enabling long-term storage.

Prometheus Rules

Definitions for recording rules and alerting rules in Prometheus, allowing for complex queries and alert conditions.

Protocol Selection

Process of choosing the appropriate network protocol for container communication based on requirements.

Quality of Service (QoS) Classes

Kubernetes classifications (Guaranteed, Burstable, BestEffort) for pods based on resource requirements and limits.

Qualys Container Security

Platform providing vulnerability management, policy compliance, and runtime defense for containers.

Quay.io

Container registry by Red Hat offering advanced features like vulnerability scanning and fine-grained access controls.

RBAC (Role-Based Access Control)

Kubernetes authorization mechanism for fine-grained control over the actions users can perform.

RBAC Best Practices

Guidelines for implementing secure and manageable role-based access control in Kubernetes environments.

RBAC for Multitenancy

Use of role-based access control to implement isolation and access management in multi-tenant Kubernetes clusters.

RDMA in Container Networks

Integration of Remote Direct Memory Access for high-performance, low-latency container networking.

Rancher for Multi-cluster Management

Platform for managing multiple Kubernetes clusters across different cloud providers and on-premises.

Rate Limiting Pattern

Technique to control the rate of requests or traffic in distributed systems, often implemented in API gateways.

Raw Block Volumes

Kubernetes volume type providing direct access to a block device for applications requiring this capability.

Reactive Systems

Architectural approach emphasizing responsiveness, resilience, elasticity, and message-driven communication in distributed systems.

Read-only Root Filesystem

Security practice of mounting a container's root filesystem as read-only to prevent runtime modifications.

ReadOnly Volumes

Kubernetes volumes mounted with read-only access, enhancing security by preventing modifications.

Registry

Service for storing and distributing container images, crucial for managing and deploying containerized applications.

Registry API

HTTP API provided by container registries for image management, authentication, and metadata retrieval.

Registry Authentication

Process of verifying the identity of clients making requests to containerized services or APIs.

Registry Caching

Technique of locally caching container images to improve pull times and reduce network usage.

Registry Mirroring

Process of replicating container images across multiple registries for improved availability and reduced latency.

Registry Webhooks

Mechanism for registries to send notifications about events such as image pushes, pulls, or deletions.

Release Trains

Scheduled, periodic releases of software components, often used in microservices architectures for coordinated updates.

ReplicaSet

Kubernetes controller ensuring a specified number of pod replicas are running at any given time.

Request Authentication

Process of verifying the identity of clients making requests to containerized services or APIs.

Request Mirroring

Technique of duplicating incoming requests to a separate service instance for testing or debugging purposes.

Resource Bin Packing

Scheduling strategy aiming to consolidate workloads onto a minimal number of nodes for efficient resource utilization.

Resource Limits

Constraints set on the amount of compute resources (CPU, memory) a container can consume, preventing resource hogging.

Resource Quotas

Kubernetes objects for limiting aggregate resource consumption per namespace, ensuring fair resource allocation.

Resource Requests

Specifications of the minimum amount of compute resources required by a container, aiding in scheduling decisions.

Resource Requests and Limits Tuning

Process of optimizing resource allocations for containers to balance performance and efficiency.

ResourceQuota

Kubernetes object providing constraints that limit aggregate resource consumption per namespace.

Retry Budgets

Limits on the number of retry attempts for failed operations in distributed systems to prevent cascading failures.

Retry Logic

Implementation of automatic reattempts for failed operations in microservices to improve system resilience.

Retry Pattern

Design pattern for handling transient failures in distributed systems by automatically repeating failed operations.

Role

Kubernetes RBAC object defining a set of permissions within a particular namespace, controlling access to resources.

RoleBinding

Kubernetes RBAC object that binds a role to a set of users or service accounts within a namespace.

RoleBindings and ClusterRoleBindings

Kubernetes objects associating Roles and ClusterRoles with users, groups, or service accounts.

Roles and ClusterRoles

Kubernetes RBAC objects defining sets of permissions at namespace or cluster level respectively.

Rollbacks

Process of reverting a deployment to a previous version in case of issues with the current version.

Rolling Updates

Deployment strategy where new versions of an application are gradually rolled out by replacing instances incrementally.

Romana for Layer 3 Networking

Networking solution for Kubernetes providing native Layer 3 networking without overlays for improved performance.

Rook

Open-source cloud-native storage orchestrator for Kubernetes, providing the platform, framework, and support for storage solutions.

Rook Storage Orchestrator

Kubernetes operator for file, block, and object storage systems, automating deployment and management of storage services.

Rootless Containers

Containers running without root privileges, enhancing security by reducing the potential impact of container breakouts.

RunC

Lightweight, portable container runtime adhering to the OCI specification, used as a low-level runtime by container engines.

RunC Internals

Inner workings and components of the RunC container runtime, including its interaction with Linux kernel features.

Runtime Application Self-Protection (RASP)

Security technology that detects and prevents real-time attacks on containerized applications.

Runtime Security

Measures and tools for protecting containerized applications during execution, including threat detection and prevention.

Runtime Threat Detection

Process of identifying and alerting on security threats to running containers and orchestration platforms.

RuntimeService

CRI component responsible for managing the entire lifecycle of a container, including creation, execution, and deletion.

SELinux Policies

Security policies enforcing mandatory access controls on containers and pods in Linux-based systems.

SLO-based Monitoring

Monitoring approach focusing on Service Level Objectives to ensure application performance and reliability.

SMI (Service Mesh Interface)

Standard specification for service meshes on Kubernetes, providing a common interface for various implementations.

SPIFFE/SPIRE for Workload Identity

Standards and implementation for securely identifying and authenticating workloads in dynamic environments.

SR-IOV for Container Networks

Use of Single Root I/O Virtualization to provide high-performance networking for containers.

Saga Pattern

Design pattern for managing data consistency across microservices in distributed transactions.

Saga Pattern for Distributed Transactions

Implementation of the Saga pattern to maintain data consistency in microservices architectures.

Sandbox Runtimes

Container runtimes providing additional isolation between the container and the host system for enhanced security.

Sandboxing

Techniques for isolating running containers from the host system and each other to enhance security.

Scale Subresource

Kubernetes API for directly managing the number of replicas of a workload without modifying the entire object.

Scheduler

Kubernetes component responsible for assigning pods to nodes based on resource requirements, policies, and constraints.

Scheduler Extender

External process allowing custom logic to be added to the Kubernetes scheduling decisions.

Scheduling Algorithms

Methods used by Kubernetes scheduler to determine the best node placement for pods based on various factors.