DevOps terms
Shipping fast, breaking nothing, sleeping soundly
The gap between writing code and running it reliably in production is where DevOps lives. CI/CD pipelines, infrastructure as code, containerisation, deployment strategies, monitoring, and incident response — this category covers the culture, tools, and practices that let teams ship with confidence and recover quickly when things go wrong.
More on DevOps
History
DevOps emerged in the late 2000s as a response to growing friction between development and operations teams, gaining visibility around 2009–2010 through conferences like O'Reilly's Velocity and practitioners like Patrick Dubois. The movement formalized practices such as Infrastructure as Code, continuous integration/deployment, and automation tooling (Chef, Puppet, Jenkins) to break down silos and accelerate software delivery. Key milestones include the adoption of containerization (Docker, 2013), orchestration platforms (Kubernetes, 2014), and cloud-native infrastructure, which enabled faster iteration cycles and more reliable deployments. Today, DevOps has evolved into broader disciplines like Site Reliability Engineering (SRE), Platform Engineering, and GitOps, emphasizing observability, blameless incident response, and shared ownership of system reliability across the entire organization.
Key concepts
- DevOps
- Continuous Integration (CI)
- Continuous Deployment (CD)
- Infrastructure as Code (IaC)
- Observability (Logs
- Metrics
- Traces)
- Incident Response
- Deployment Rollback Strategies
Best references
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The Phoenix Project: A Novel About IT, DevOps, and Helping Your Business Win Seminal business novel that introduced DevOps principles to a mainstream audience through narrative. Essential reading for understanding DevOps culture and organizational transformation.
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Site Reliability Engineering: How Google Runs Production Systems Google's canonical guide to SRE practices, covering observability, incident response, error budgets, and operational excellence. Foundational for modern DevOps and production best practices.
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The DevOps Handbook: How to Create World-Class Agility, Reliability, and Security in Technology Organizations Comprehensive guide by Gene Kim and team on implementing DevOps at scale. Covers CI/CD, infrastructure as code, and cultural change with real-world case studies.
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CNCF Cloud Native Computing Foundation - Official Documentation Authoritative source for containerization, Kubernetes, and modern DevOps tooling standards. Essential for understanding container orchestration and cloud-native architecture.
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GitHub Actions Documentation Official reference for CI/CD automation on GitHub. Directly relevant for PHP developers implementing continuous deployment pipelines in modern workflows.
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12 Factor App Methodology Heroku's widely-adopted methodology for building scalable, maintainable applications. Foundational principles for DevOps practices around configuration, dependencies, and statelessness.
✦ Latest in DevOps
Typed relationships here
Edges touching a DevOps term.
- Real User Monitoring (RUM) Often seen in Observability (Logs, Metrics, Traces) 4d
- Alerting & On-Call Often seen in Platform Engineering Sep 16
- DevOps Complements Developer Experience (DX) Sep 16
- Container Registry Often seen in Platform Engineering Sep 14
- DORA Metrics Often seen in Platform Engineering Sep 3
API design and semantic versioning are linked by Hyrum's Law: once an interface has enough users, every observable quirk becomes part of its de facto contract, not just what the docs promise. That's why SemVer's MAJOR/MINOR/PATCH signal is so fraught in practice — a 'patch' that fixes an undocumented behaviour can still break real consumers, forcing API designers to treat observable behaviour, not just the written spec, as what versioning must protect.
When you run incident_response well, you capture the detection, containment, and recovery steps in runbooks rather than leaving them locked in one veteran engineer's head. Those same runbooks are what lift the bus_factor: by turning tribal incident knowledge into documented procedure, any on-call engineer can step in, so the team no longer hinges on a single person knowing how to handle a 3am outage. The runbook is the artifact that carries that hard-won response knowledge out of individuals and into the team.
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Internal Developer Platform (IDP)
A curated, self-service layer on top of cloud and CI/CD infrastructure that product teams use to ship services without filing tickets — paved roads that make the right thing the easy thing.
6mo ago
DevOps intermediate
Docker HEALTHCHECK
4
A Dockerfile instruction that defines how Docker tests whether a container is healthy — enabling automatic restart and load balancer removal on failure.
7mo ago
DevOps intermediate
Container Registry
PHP 5.0+
1
A storage and distribution system for Docker images — Docker Hub, Amazon ECR, GitHub Container Registry (GHCR), and Google Artifact Registry store versioned, immutable image tags.
7mo ago
DevOps beginner
Docker Multi-Stage Builds
PHP 5.0+ Dockerfile builds using multiple FROM stages — build dependencies (Composer, Node, test tools) in earlier stages, copy only production artifacts to the final minimal image.
7mo ago
DevOps intermediate
eBPF — Kernel-Level Observability
5
Extended Berkeley Packet Filter — a technology for running sandboxed programs in the Linux kernel to trace system calls, network traffic, and performance metrics without modifying applications.
7mo ago
DevOps advanced
Kubernetes for PHP Developers
PHP 5.0+
1
The essential Kubernetes concepts PHP developers need — Pods, Deployments, Services, ConfigMaps, Secrets, and Ingress — for deploying and scaling PHP applications on Kubernetes.
7mo ago
DevOps intermediate
nginx + PHP-FPM Production Config
PHP 5.0+
2
The canonical nginx + PHP-FPM setup for PHP production — nginx handles static files and slow clients, PHP-FPM runs PHP via FastCGI, with proper timeout, buffer, and security settings.
7mo ago
DevOps intermediate
On-Call Culture & Runbooks
Sustainable on-call practices — fair rotation, blameless postmortems, actionable alerts, and well-maintained runbooks that reduce mean time to recovery and prevent burnout.
7mo ago
DevOps intermediate
Platform Engineering
7
Building internal developer platforms that abstract infrastructure complexity — giving product teams self-service access to deployment, observability, and data services without ops tickets.
7mo ago
DevOps advanced
Shift-Left Testing
1
Moving testing earlier in the development process — catching bugs at the developer's machine and PR stage rather than in staging or production.
7mo ago
DevOps intermediate
Alerting & On-Call
PHP 5.0+
4
Automated notifications triggered when SLIs breach SLO thresholds — effective alerting is actionable, low-noise, and tied to clear runbooks.
7mo ago
DevOps intermediate
Blameless Post-Mortem
PHP 5.0+
3
A structured review of an incident focused on systemic causes and improvements, not individual blame — making it safe to surface failures.
7mo ago
DevOps intermediate
Blue/Green Deployment
PHP 5.0+
6
Maintaining two identical production environments and switching traffic between them for zero-downtime releases and instant rollback.
7mo ago
DevOps intermediate
Canary Release
PHP 5.0+
4
Gradually routing a small percentage of traffic to a new release, monitoring for issues before a full rollout.
7mo ago
DevOps intermediate
Chaos Engineering
PHP 5.0+
10
Deliberately injecting failures into a production system to discover weaknesses before they cause unplanned outages.
7mo ago
DevOps advanced
Container Security
PHP 5.0+
1
Security practices for building and running containers — minimal base images, non-root users, read-only filesystems, image scanning, and runtime security controls.
7mo ago
DevOps intermediate
Containerisation (Docker for PHP)
PHP 5.0+
7
Packaging PHP applications and their dependencies into Docker containers for consistent, reproducible environments from dev to production.
7mo ago
DevOps intermediate
Continuous Deployment (CD)
PHP 5.0+
6
Automatically deploying every commit that passes CI to production, eliminating manual release steps.
7mo ago
DevOps intermediate
Continuous Integration (CI)
PHP 5.0+
4
Automating the build, test, and analysis pipeline to run on every commit, surfacing integration failures quickly.
7mo ago
DevOps beginner
Deployment Rollback Strategies
PHP 5.0+
4
Strategies for reverting a broken deployment quickly — from git revert and re-deploy to instant traffic switching with blue-green or feature flags.
7mo ago
DevOps intermediate