Docker BuildKit secrets: test mounts and cache invalidation
Test Docker BuildKit secret mounts and cache invalidation. Rotate a token, force an uncached build, and inspect logs, image history, and files.
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Author profile
Emmanuel Oyibo
Technical Documentation Lead
Emmanuel Oyibo writes about API documentation, cloud infrastructure, Linux, and developer tools. His tutorials focus on the steps, examples, and technical context readers need to complete a task.
At Emminex Techdocs, he works on documentation strategy, product guides, and technical content for software teams.
Areas of expertise
Topics Emmanuel covers.
- API documentation
- Developer portals
- Cloud infrastructure
- Linux
- Docs as code
- Technical content strategy
Articles
Recent work.
Developer Tooling13 min read
Grafana dashboard provisioning: UIDs, updates, and drift
Test Grafana dashboard provisioning with stable UIDs. Verify data source health, rejected API saves, and source-file updates in a runnable lab.
Read article →API & Backend13 min read
Kafka consumer offsets: test commits, replay, and recovery
Test Kafka consumer offset commits with runnable Java code. Reproduce an uncommitted replay and verify where consumption resumes after a commit.
Read article →API & Backend13 min read
Kubernetes graceful shutdown: test preStop and SIGTERM
Test Kubernetes graceful shutdown with preStop and SIGTERM. Follow an admitted request through Pod deletion, draining, and EndpointSlice changes.
Read article →API & Backend12 min read
NGINX proxy retries: test GET recovery and POST failures
Test NGINX proxy retries with two backends. Recover a GET after an upstream 503 and inspect a failed POST that already changed server state.
Read article →Developer Tooling12 min read
OpenTelemetry redaction: remove span and event attributes
Test OpenTelemetry redaction across resource, span, and event attributes. Reproduce an event leak, fix its transform, and inspect both exports.
Read article →API & Backend13 min read
PostgreSQL job queues with SKIP LOCKED and expiring leases
Build a PostgreSQL job queue with SKIP LOCKED, expiring leases, and generation checks. Run competing claims and verify that stale completion fails.
Read article →Developer Tooling13 min read
Prometheus alert rule testing for latency SLOs
Test Prometheus latency SLO alerts with promtool. Verify pending states, counter resets, zero traffic, missing metrics, and failed scrapes.
Read article →API & Backend13 min read
RabbitMQ publisher confirms, acknowledgements, and redelivery
Run a RabbitMQ recovery lab with Pika. Test publisher confirms, unroutable messages, connection loss, redelivery, and consumer acknowledgements.
Read article →API & Backend12 min read
Redis Streams recovery with XAUTOCLAIM and XACK
Recover pending Redis Streams messages with XAUTOCLAIM, inspect ownership, and verify XACK behavior in a runnable consumer recovery and restart lab.
Read article →Developer Tooling12 min read
Backstage Software Templates: Build a Golden Path
Create a production-minded Backstage Software Template with validated inputs, repository scaffolding, catalog registration, CI checks, ownership, and safe rollout.
Read article →Developer Tooling12 min read
Build an MCP Server in TypeScript: Step-by-Step Guide
Build a production-minded MCP server in TypeScript with typed tools, stdio transport, validation, testing, security controls, and deployment guidance.
Read article →API & Backend14 min read
Cursor Pagination with Node.js and PostgreSQL
Implement stable cursor pagination in a Node.js API with PostgreSQL keyset queries, opaque tokens, deterministic ordering, validation, and pagination tests.
Read article →Developer Tooling11 min read
Docker Compose for Local Development: A Practical Guide
Build a dependable Docker Compose development environment with health checks, migrations, profiles, live reload, secrets, debugging, and reproducible team workflows.
Read article →API & Backend13 min read
Idempotent Webhooks with Node.js and PostgreSQL
Build an idempotent Node.js webhook consumer with signature verification, PostgreSQL transactions, durable event records, retries, and safe side effects.
Read article →API & Backend13 min read
OAuth PKCE for CLI Apps: A Secure Implementation Guide
Implement OAuth authorization code flow with PKCE in a Node.js CLI using a loopback redirect, state validation, token exchange, secure storage, and refresh handling.
Read article →API & Backend11 min read
Validate OpenAPI Specifications in GitHub Actions
Build an OpenAPI CI pipeline with Redocly CLI, reusable rules, bundled artifacts, compatibility review, documentation previews, and pull-request feedback.
Read article →Developer Tooling12 min read
OpenTelemetry Node.js Tutorial: Traces, Metrics, and Logs
Instrument a Node.js API with OpenTelemetry, export OTLP telemetry, add useful spans and metrics, control cardinality, and verify the complete signal path.
Read article →Developer Tooling13 min read
Build a Production-Ready TypeScript CLI
Build a TypeScript CLI with Node.js argument parsing, stable output, configuration precedence, safe process handling, tests, packaging, and reliable releases.
Read article →API & Backend12 min read
Redis Rate Limiting in Node.js: A Production Guide
Implement an atomic token-bucket rate limiter with Redis and Node.js, then add HTTP headers, failover policy, cluster-safe keys, tests, and production monitoring.
Read article →Developer Marketing12 min read
How Developer Content Drives Organic Growth
Build a developer content strategy around real technical tasks, product evidence, search intent, distribution, conversion paths, and measurable business outcomes.
Read article →Documentation Practice12 min read
Why API Documentation Matters: A Practical Guide
Learn how effective API documentation improves developer activation, integration quality, support efficiency, and long-term product adoption.
Read article →Developer Marketing11 min read
How to Write Comparison Pages That Rank and Convert
Create technically credible software comparison pages with clear intent, reproducible evidence, useful code, honest trade-offs, and measurable conversion paths.
Read article →Documentation Practice12 min read
Docs as Code: Workflow, Tools, and Migration Guide
A practical docs-as-code guide covering repository structure, reviews, automated checks, deployment, ownership, and a low-risk migration plan.
Read article →Documentation Practice13 min read
7 Technical Writing Mistakes That Frustrate Developers
Identify seven documentation mistakes that block developer tasks, then use practical examples, review checks, and metrics to correct them.
Read article →Documentation Practice12 min read
The Complete Developer Portal Checklist for 2026
Audit your developer portal across onboarding, API reference, search, accessibility, operations, governance, SEO, and AI-assisted discovery.
Read article →Start a conversation
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