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# Sachith Dassanayake

Welcome to Sachith's Home Page

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## Posts

- [Node.js 22 vs Bun vs Deno trade‑offs — Best Practices in 2025 — Practical Guide (Aug 5, 2026)](https://www.sachith.co.uk/node-js-22-vs-bun-vs-deno-trade‑offs-best-practices-in-2025-practical-guide-aug-5-2026/) - Node.js 22 vs Bun vs Deno trade‑offs — Best Practices in 2025 — Practical Guide (Aug 5, 2026)Unexpected response from model (HTTP 429).{ "error": { "message": "You have no credits remaining. Add credits to continue using the API at https://platform.openai.com/settings/organization/billing/.", "type": "insufficient_quota", "param": null, "code": "credit_balance_exhausted" } }
- [Secret management: SOPS, Vault, and KMS — Architecture & Trade‑offs — Practical Guide (Aug 3, 2026)](https://www.sachith.co.uk/secret-management-sops-vault-and-kms-architecture-trade‑offs-practical-guide-aug-3-2026/) - Secret management: SOPS, Vault, and KMS — Architecture & Trade‑offs — Practical Guide (Aug 3, 2026)Unexpected response from model (HTTP 429).{ "error": { "message": "You have no credits remaining. Add credits to continue using the API at https://platform.openai.com/settings/organization/billing/.", "type": "insufficient_quota", "param": null, "code": "credit_balance_exhausted" } }
- [FastAPI production checklist — Testing Strategy — Practical Guide (Aug 2, 2026)](https://www.sachith.co.uk/fastapi-production-checklist-testing-strategy-practical-guide-aug-2-2026/) - FastAPI production checklist — Testing Strategy — Practical Guide (Aug 2, 2026)Unexpected response from model (HTTP 429).{ "error": { "message": "You have no credits remaining. Add credits to continue using the API at https://platform.openai.com/settings/organization/billing/.", "type": "insufficient_quota", "param": null, "code": "credit_balance_exhausted" } }
- [OpenTelemetry: traces, metrics, logs — From Zero to Production — Practical Guide (Jul 31, 2026)](https://www.sachith.co.uk/opentelemetry-traces-metrics-logs-from-zero-to-production-practical-guide-jul-31-2026/) - OpenTelemetry: traces, metrics, logs — From Zero to Production — Practical Guide (Jul 31, 2026) OpenTelemetry: traces, metrics, logs — From Zero to Production OpenTelemetry: traces, metrics, logs — From Zero to Production Level: Intermediate As of July 31, 2026 OpenTelemetry has become the de facto standard for observability in cloud-native applications. Combining traces, metrics,
- [Background tasks and limits on iOS/Android — CI/CD Automation — Practical Guide (Jul 28, 2026)](https://www.sachith.co.uk/background-tasks-and-limits-on-ios-android-ci-cd-automation-practical-guide-jul-28-2026/) - Background tasks and limits on iOS/Android — CI/CD Automation — Practical Guide (Jul 28, 2026) Background tasks and limits on iOS/Android — CI/CD Automation Level: Intermediate As of: 28 July 2026 Handling background tasks effectively on iOS and Android is critical for modern mobile app development, especially when integrating Continuous Integration/Continuous Deployment (CI/CD) pipelines that
- [Static analysis: ESLint, PHPStan, mypy — Monitoring & Observability — Practical Guide (Jul 27, 2026)](https://www.sachith.co.uk/static-analysis-eslint-phpstan-mypy-monitoring-observability-practical-guide-jul-27-2026/) - Static analysis: ESLint, PHPStan, mypy — Monitoring & Observability — Practical Guide (Jul 27, 2026) Static analysis: ESLint, PHPStan, mypy — Monitoring & Observability Level: Intermediate As of July 27, 2026, static analysis is a cornerstone of modern software quality assurance. Tools like ESLint, PHPStan, and mypy enable developers to catch bugs early, enforce coding
- [Package managers: npm vs pnpm vs yarn — Security Pitfalls & Fixes — Practical Guide (Jul 25, 2026)](https://www.sachith.co.uk/package-managers-npm-vs-pnpm-vs-yarn-security-pitfalls-fixes-practical-guide-jul-25-2026/) - Package managers: npm vs pnpm vs yarn — Security Pitfalls & Fixes — Practical Guide (Jul 25, 2026) Package managers: npm vs pnpm vs yarn — Security Pitfalls & Fixes Package managers: npm vs pnpm vs yarn — Security Pitfalls & Fixes Level: Experienced As of July 25, 2026: npm (v10+), pnpm (v8+), Yarn (Berry
- [.NET minimal APIs vs full controllers — Scaling Strategies — Practical Guide (Jul 24, 2026)](https://www.sachith.co.uk/net-minimal-apis-vs-full-controllers-scaling-strategies-practical-guide-jul-24-2026/) - .NET minimal APIs vs full controllers — Scaling Strategies — Practical Guide (Jul 24, 2026) .NET Minimal APIs vs Full Controllers — Scaling Strategies .NET Minimal APIs vs Full Controllers — Scaling Strategies Level: Experienced As of July 24, 2026; applies primarily to .NET 6 through .NET 8 (preview features noted). Introduction Since the introduction
- [PHP 8.4 performance tips — CI/CD Automation — Practical Guide (Jul 22, 2026)](https://www.sachith.co.uk/php-8-4-performance-tips-ci-cd-automation-practical-guide-jul-22-2026/) - PHP 8.4 performance tips — CI/CD Automation — Practical Guide (Jul 22, 2026) PHP 8.4 Performance Tips — CI/CD Automation body { font-family: Arial, sans-serif; line-height: 1.6; margin: 20px; max-width: 900px; } pre { background: #f5f5f5; padding: 10px; overflow-x: auto; } code { font-family: Consolas, monospace; } p.audience { font-size: 0.9em; font-style: italic; color: #555;
- [Backpressure & queue design — Best Practices in 2025 — Practical Guide (Jul 21, 2026)](https://www.sachith.co.uk/backpressure-queue-design-best-practices-in-2025-practical-guide-jul-21-2026/) - Backpressure & queue design — Best Practices in 2025 — Practical Guide (Jul 21, 2026) Backpressure & Queue Design — Best Practices in 2025 Backpressure & Queue Design — Best Practices in 2025 Level: Experienced Software Engineers As of 21 July 2026 Introduction Modern distributed systems, reactive applications, and streaming platforms face one ever-present challenge:
- [Kubernetes Zero-Downtime Deploys — Practical Guide (Jul 19, 2026)](https://www.sachith.co.uk/kubernetes-zero-downtime-deploys-practical-guide-jul-19-2026/) - Kubernetes Zero-Downtime Deploys — Practical Guide (Jul 19, 2026) Kubernetes Zero-Downtime Deploys Kubernetes Zero-Downtime Deploys Level: Intermediate As of 19 July 2026, Kubernetes versions 1.25 through 1.29 are referenced in this article with a focus on stable deployment features. Introduction Zero-downtime deployment is a critical goal in modern cloud-native environments, particularly when using Kubernetes. It
- [Testcontainers for reliable integration tests — Production Hardening — Practical Guide (Jul 18, 2026)](https://www.sachith.co.uk/testcontainers-for-reliable-integration-tests-production-hardening-practical-guide-jul-18-2026/) - Testcontainers for reliable integration tests — Production Hardening — Practical Guide (Jul 18, 2026) Testcontainers for reliable integration tests — Production Hardening body { font-family: Arial, sans-serif; line-height: 1.6; margin: 1rem 2rem; max-width: 900px; } h2, h3 { margin-top: 2rem; } pre { background: #f4f4f4; border: 1px solid #ddd; padding: 1rem; overflow-x: auto; } p.audience
- [Azure DevOps YAML pipelines — Crash Course — Practical Guide (Jul 16, 2026)](https://www.sachith.co.uk/azure-devops-yaml-pipelines-crash-course-practical-guide-jul-16-2026/) - Azure DevOps YAML pipelines — Crash Course — Practical Guide (Jul 16, 2026) Azure DevOps YAML Pipelines — Crash Course Level: Intermediate As of 16 July 2026, referencing Azure DevOps Services and Server versions 2022 and later. Introduction Azure DevOps pipelines have evolved into a powerful, flexible system for automated build, test, and deployment workflows.
- [Elasticsearch/OpenSearch sizing & mappings — CI/CD Automation — Practical Guide (Jul 15, 2026)](https://www.sachith.co.uk/elasticsearch-opensearch-sizing-mappings-ci-cd-automation-practical-guide-jul-15-2026/) - Elasticsearch/OpenSearch sizing & mappings — CI/CD Automation — Practical Guide (Jul 15, 2026) Elasticsearch/OpenSearch sizing & mappings — CI/CD Automation Elasticsearch/OpenSearch sizing & mappings — CI/CD Automation Level: Intermediate As of July 15, 2026; applicable to Elasticsearch 8.x (Elastic NV) and OpenSearch 2.x and 3.x. Introduction Elastic Stack (Elasticsearch) and Amazon OpenSearch Service are two
- [Accessibility beyond the basics (ARIA, focus, contrast) — Scaling Strategies — Practical Guide (Jul 13, 2026)](https://www.sachith.co.uk/accessibility-beyond-the-basics-aria-focus-contrast-scaling-strategies-practical-guide-jul-13-2026/) - Accessibility beyond the basics (ARIA, focus, contrast) — Scaling Strategies — Practical Guide (Jul 13, 2026) Accessibility beyond the basics (ARIA, focus, contrast) — Scaling Strategies body { font-family: Arial, sans-serif; line-height: 1.6; max-width: 750px; margin: 1rem auto; padding: 0 1rem; colour: #222; } h2, h3 { margin-top: 1.5rem; } p.audience { font-weight: bold; color:
- [CSP, CORS, and secure headers — Patterns & Anti‑Patterns — Practical Guide (Jul 12, 2026)](https://www.sachith.co.uk/csp-cors-and-secure-headers-patterns-anti‑patterns-practical-guide-jul-12-2026/) - CSP, CORS, and secure headers — Patterns & Anti‑Patterns — Practical Guide (Jul 12, 2026) CSP, CORS, and secure headers — Patterns & Anti‑Patterns CSP, CORS, and secure headers — Patterns & Anti‑Patterns Level: Intermediate As of July 12, 2026 Prerequisites This article assumes you have a solid understanding of HTTP(s) protocols, browser security concepts,
- [Fine‑tuning vs adapters vs prompts — Real‑World Case Study — Practical Guide (Jul 10, 2026)](https://www.sachith.co.uk/fine‑tuning-vs-adapters-vs-prompts-real‑world-case-study-practical-guide-jul-10-2026/) - Fine‑tuning vs adapters vs prompts — Real‑World Case Study — Practical Guide (Jul 10, 2026)Unexpected response from model (HTTP 500).{ "error": { "message": "An error occurred while processing your request. You can retry your request, or contact us through our help center at help.openai.com if the error persists. Please include the request ID req_9e9898f53bc0420a8904b8b6b68f093d in
- [OWASP ASVS applied to web/mobile — Migration Playbook — Practical Guide (Jul 9, 2026)](https://www.sachith.co.uk/owasp-asvs-applied-to-web-mobile-migration-playbook-practical-guide-jul-9-2026/) - OWASP ASVS applied to web/mobile — Migration Playbook — Practical Guide (Jul 9, 2026) OWASP ASVS applied to web/mobile — Migration Playbook body { font-family: Arial, sans-serif; line-height: 1.6; margin: 1em 2em; max-width: 900px; } pre { background: #f4f4f4; padding: 10px; border-left: 4px solid #0074D9; overflow-x: auto; } code { font-family: Consolas, monospace; } h2,
- [ArgoCD & GitOps fundamentals — Patterns & Anti‑Patterns — Practical Guide (Jul 7, 2026)](https://www.sachith.co.uk/argocd-gitops-fundamentals-patterns-anti‑patterns-practical-guide-jul-7-2026/) - ArgoCD & GitOps fundamentals — Patterns & Anti‑Patterns — Practical Guide (Jul 7, 2026) ArgoCD & GitOps fundamentals — Patterns & Anti‑Patterns Level: Intermediate Date: 7 July 2026 GitOps has emerged as a leading approach to continuous delivery in Kubernetes environments, centring around declarative infrastructure and version-controlled deployment manifests. ArgoCD, a popular Kubernetes-native continuous delivery
- [Developer platforms & IDPs (Backstage/Roadie) — Testing Strategy — Practical Guide (Jul 6, 2026)](https://www.sachith.co.uk/developer-platforms-idps-backstage-roadie-testing-strategy-practical-guide-jul-6-2026/) - Developer platforms & IDPs (Backstage/Roadie) — Testing Strategy — Practical Guide (Jul 6, 2026) Developer platforms & IDPs (Backstage/Roadie) — Testing Strategy Developer platforms & IDPs (Backstage/Roadie) — Testing Strategy Level: Intermediate Updated as of July 6, 2026. This guidance primarily covers Backstage versions 1.10 and above, and Roadie’s hosted Backstage platform offerings aligned with
- [Idempotency keys and safe retries — CI/CD Automation — Practical Guide (Jul 4, 2026)](https://www.sachith.co.uk/idempotency-keys-and-safe-retries-ci-cd-automation-practical-guide-jul-4-2026/) - Idempotency keys and safe retries — CI/CD Automation — Practical Guide (Jul 4, 2026) Idempotency keys and safe retries — CI/CD Automation body { font-family: Arial, sans-serif; line-height: 1.6; max-width: 800px; margin: 1em auto; padding: 0 1em; colour: #222; } h2 { border-bottom: 2px solid #666; padding-bottom: 0.25em; } pre { background: #f4f4f4; padding: 1em;
- [Laravel 11 performance & caching — Design Review Checklist — Practical Guide (Jul 3, 2026)](https://www.sachith.co.uk/laravel-11-performance-caching-design-review-checklist-practical-guide-jul-3-2026/) - Laravel 11 performance & caching — Design Review Checklist — Practical Guide (Jul 3, 2026) Laravel 11 performance & caching — Design Review Checklist Laravel 11 performance & caching — Design Review Checklist Level: Intermediate to Experienced As of July 3, 2026 — applicable mainly to Laravel 10 and 11 (stable), with notes on upcoming
- [Lambda cold starts and mitigations — Testing Strategy — Practical Guide (Jul 1, 2026)](https://www.sachith.co.uk/lambda-cold-starts-and-mitigations-testing-strategy-practical-guide-jul-1-2026/) - Lambda cold starts and mitigations — Testing Strategy — Practical Guide (Jul 1, 2026) Lambda cold starts and mitigations — Testing Strategy Level: Intermediate As of July 1, 2026, AWS Lambda remains one of the leading serverless platforms, powering countless applications with the promise of event-driven, scalable compute without infrastructure management. However, cold start latency
- [Access reviews & least privilege — Design Review Checklist — Practical Guide (Jun 30, 2026)](https://www.sachith.co.uk/access-reviews-least-privilege-design-review-checklist-practical-guide-jun-30-2026/) - Access reviews & least privilege — Design Review Checklist — Practical Guide (Jun 30, 2026) Access reviews & least privilege — Design Review Checklist Access reviews & least privilege — Design Review Checklist Level: Intermediate software engineers and architects As of date: 30 June 2026 Introduction Implementing least privilege and performing thorough access reviews are
- [Functional programming pragmatism for OOP teams — Migration Playbook — Practical Guide (Jun 28, 2026)](https://www.sachith.co.uk/functional-programming-pragmatism-for-oop-teams-migration-playbook-practical-guide-jun-28-2026/) - Functional programming pragmatism for OOP teams — Migration Playbook — Practical Guide (Jun 28, 2026) Functional programming pragmatism for OOP teams — Migration Playbook body { font-family: Arial, sans-serif; line-height: 1.6; max-width: 760px; margin: 2rem auto; padding: 0 1rem; } h2, h3 { colour: #003366; } pre { background: #f4f4f4; padding: 1em; overflow-x: auto; }
- [Prioritising tech debt with risk/impact — Crash Course — Practical Guide (Jun 27, 2026)](https://www.sachith.co.uk/prioritising-tech-debt-with-risk-impact-crash-course-practical-guide-jun-27-2026/) - Prioritising tech debt with risk/impact — Crash Course — Practical Guide (Jun 27, 2026) Prioritising Tech Debt with Risk/Impact — Crash Course body { font-family: Arial, sans-serif; line-height: 1.6; max-width: 800px; margin: 2rem auto; padding: 0 1rem; } h2, h3 { color: #2c3e50; } pre { background: #f4f4f4; padding: 1rem; overflow-x: auto; border-radius: 4px; }
- [Roadmaps & outcome‑based planning — Performance Tuning Guide — Practical Guide (Jun 25, 2026)](https://www.sachith.co.uk/roadmaps-outcome‑based-planning-performance-tuning-guide-practical-guide-jun-25-2026/) - Roadmaps & outcome‑based planning — Performance Tuning Guide — Practical Guide (Jun 25, 2026) Roadmaps & Outcome‑Based Planning — Performance Tuning Guide Level: Experienced Software Engineers As of June 25, 2026 Introduction In modern software engineering, roadmaps are no longer solely about timelines or feature checklists. Outcome‑based planning shifts the focus to specific, measurable business
- [When microservices actually make sense — Best Practices in 2025 — Practical Guide (Jun 24, 2026)](https://www.sachith.co.uk/when-microservices-actually-make-sense-best-practices-in-2025-practical-guide-jun-24-2026/) - When microservices actually make sense — Best Practices in 2025 — Practical Guide (Jun 24, 2026) When microservices actually make sense — Best Practices in 2025 body { font-family: Arial, sans-serif; line-height: 1.6; max-width: 760px; margin: 2rem auto; padding: 0 1rem; colour: #222; } pre { background: #f4f4f4; padding: 1rem; overflow-x: auto; } code {
- [Bazel/Nx for large repos — Cheat Sheet — Practical Guide (Jun 22, 2026)](https://www.sachith.co.uk/bazel-nx-for-large-repos-cheat-sheet-practical-guide-jun-22-2026/) - Bazel/Nx for large repos — Cheat Sheet — Practical Guide (Jun 22, 2026) Bazel/Nx for large repos — Cheat Sheet Level: Intermediate Last updated: June 22, 2026 Introduction Managing large repositories is a common challenge in modern software engineering, especially when scaling teams, builds, and CI/CD pipelines. Bazel and Nx are two leading build systems
- [Django DRF vs FastAPI for APIs — Crash Course — Practical Guide (Jun 21, 2026)](https://www.sachith.co.uk/django-drf-vs-fastapi-for-apis-crash-course-practical-guide-jun-21-2026/) - Django DRF vs FastAPI for APIs — Crash Course — Practical Guide (Jun 21, 2026) Django DRF vs FastAPI for APIs — Crash Course Django DRF vs FastAPI for APIs — Crash Course Level: Intermediate As of 21 June 2026 (Django 5.x, DRF 4.x, FastAPI 0.96+) Introduction Building modern APIs in Python commonly involves two
- [Static analysis: ESLint, PHPStan, mypy — Architecture & Trade‑offs — Practical Guide (Jun 19, 2026)](https://www.sachith.co.uk/static-analysis-eslint-phpstan-mypy-architecture-trade‑offs-practical-guide-jun-19-2026/) - Static analysis: ESLint, PHPStan, mypy — Architecture & Trade‑offs — Practical Guide (Jun 19, 2026) Static analysis: ESLint, PHPStan, mypy — Architecture & Trade-offs body { font-family: Arial, sans-serif; line-height: 1.6; margin: 2em; max-width: 900px; } h2, h3 { margin-top: 1.5em; } pre { background: #f4f4f4; padding: 1em; overflow-x: auto; } code { font-family: Consolas,
- [Secret management: SOPS, Vault, and KMS — Monitoring & Observability — Practical Guide (Jun 18, 2026)](https://www.sachith.co.uk/secret-management-sops-vault-and-kms-monitoring-observability-practical-guide-jun-18-2026/) - Secret management: SOPS, Vault, and KMS — Monitoring & Observability — Practical Guide (Jun 18, 2026) Secret management: SOPS, Vault, and KMS — Monitoring & Observability Level: Intermediate Date: June 18, 2026 Managing secrets—API keys, certificates, passwords—securely and efficiently is a foundational challenge for modern software engineering teams. Tools such as SOPS, Vault, and cloud
- [Circuit breakers, bulkheads, and timeouts — Ops Runbook — Practical Guide (Jun 16, 2026)](https://www.sachith.co.uk/circuit-breakers-bulkheads-and-timeouts-ops-runbook-practical-guide-jun-16-2026/) - Circuit breakers, bulkheads, and timeouts — Ops Runbook — Practical Guide (Jun 16, 2026) Circuit breakers, bulkheads, and timeouts — Ops Runbook body { font-family: Arial, sans-serif; line-height: 1.6; margin: 2em; max-width: 900px; } h2, h3 { color: #003366; } pre { background: #f4f4f4; border: 1px solid #ddd; padding: 1em; overflow-x: auto; } code {
- [High‑cardinality metrics dos and don’ts — Testing Strategy — Practical Guide (Jun 15, 2026)](https://www.sachith.co.uk/high‑cardinality-metrics-dos-and-donts-testing-strategy-practical-guide-jun-15-2026/) - High‑cardinality metrics dos and don’ts — Testing Strategy — Practical Guide (Jun 15, 2026) High‑cardinality metrics dos and don’ts — Testing Strategy Level: Intermediate software engineers with experience in observability platforms and reliable metrics instrumentation Date: June 15, 2026 High‑cardinality metrics, those with many unique label-value combinations, pose unique challenges in software observability. Testing strategies
- [Offline‑first PWAs: caching & background sync — Testing Strategy — Practical Guide (Jun 13, 2026)](https://www.sachith.co.uk/offline‑first-pwas-caching-background-sync-testing-strategy-practical-guide-jun-13-2026/) - Offline‑first PWAs: caching & background sync — Testing Strategy — Practical Guide (Jun 13, 2026) Offline‑first PWAs: caching & background sync — Testing Strategy Offline‑first PWAs: caching & background sync — Testing Strategy Level: Intermediate As of June 13, 2026 Progressive Web Apps (PWAs) that work seamlessly offline rely heavily on robust caching strategies combined
- [Go concurrency patterns you’ll actually use — Scaling Strategies — Practical Guide (Jun 12, 2026)](https://www.sachith.co.uk/go-concurrency-patterns-youll-actually-use-scaling-strategies-practical-guide-jun-12-2026/) - Go concurrency patterns you’ll actually use — Scaling Strategies — Practical Guide (Jun 12, 2026) Go concurrency patterns you’ll actually use — Scaling Strategies body { font-family: Arial, sans-serif; line-height: 1.6; } h2 { margin-top: 2em; } pre { background: #f4f4f4; padding: 1em; overflow-x: auto; } code { font-family: Consolas, monospace; } .audience { font-style:
- [PHP 8.x in High-Perf APIs — Practical Guide (Jun 10, 2026)](https://www.sachith.co.uk/php-8-x-in-high-perf-apis-practical-guide-jun-10-2026/) - PHP 8.x in High-Perf APIs — Practical Guide (Jun 10, 2026) PHP 8.x in High-Perf APIs Level: Experienced As of June 2026, PHP 8.x remains a strong contender for building performant, scalable APIs. Since the release of PHP 8.0 in November 2020, the language has seen continued optimisation, language features, and JIT improvements through 8.1,
- [Code review checklists that work — Production Hardening — Practical Guide (Jun 9, 2026)](https://www.sachith.co.uk/code-review-checklists-that-work-production-hardening-practical-guide-jun-9-2026/) - Code review checklists that work — Production Hardening — Practical Guide (Jun 9, 2026) Code Review Checklists that Work — Production Hardening Code Review Checklists that Work — Production Hardening Level: Intermediate 9 June 2026 Introduction Code reviews are an essential step in software development pipelines, especially when preparing code for production deployment. Beyond correctness
- [ArgoCD & GitOps fundamentals — Cheat Sheet — Practical Guide (Jun 7, 2026)](https://www.sachith.co.uk/argocd-gitops-fundamentals-cheat-sheet-practical-guide-jun-7-2026/) - ArgoCD & GitOps fundamentals — Cheat Sheet — Practical Guide (Jun 7, 2026) ArgoCD & GitOps fundamentals — Cheat Sheet body {font-family: Arial, sans-serif; line-height: 1.6; max-width: 800px; margin: 1rem auto; padding: 0 1rem;} h2, h3 {color: #2a3f66;} pre {background: #f4f4f4; padding: 1rem; border-left: 4px solid #2a3f66; overflow-x: auto;} code {font-family: Consolas, monospace;} p.audience {font-weight:
- [Cloudflare Workers/Pages at the edge — Security Pitfalls & Fixes — Practical Guide (Jun 6, 2026)](https://www.sachith.co.uk/cloudflare-workers-pages-at-the-edge-security-pitfalls-fixes-practical-guide-jun-6-2026/) - Cloudflare Workers/Pages at the edge — Security Pitfalls & Fixes — Practical Guide (Jun 6, 2026) Cloudflare Workers/Pages at the edge — Security Pitfalls & Fixes body { font-family: Arial, sans-serif; line-height: 1.6; margin: 1rem; max-width: 900px; } h2 { margin-top: 2rem; } h3 { margin-top: 1.5rem; } pre { background: #f5f5f5; padding: 1rem; overflow-x:
- [Property‑based testing for APIs — Migration Playbook — Practical Guide (Jun 4, 2026)](https://www.sachith.co.uk/property‑based-testing-for-apis-migration-playbook-practical-guide-jun-4-2026/) - Property‑based testing for APIs — Migration Playbook — Practical Guide (Jun 4, 2026) Property‑based testing for APIs — Migration Playbook Property‑based testing for APIs — Migration Playbook Level: Intermediate Updated: 4 June 2026 Introduction Property-based testing (PBT) has gained traction as a robust approach for improving the quality and reliability of software, including APIs. Unlike
- [Modular monoliths done right — Scaling Strategies — Practical Guide (Jun 3, 2026)](https://www.sachith.co.uk/modular-monoliths-done-right-scaling-strategies-practical-guide-jun-3-2026/) - Modular monoliths done right — Scaling Strategies — Practical Guide (Jun 3, 2026) Modular monoliths done right — Scaling Strategies Modular monoliths done right — Scaling Strategies Level: Experienced As of June 3, 2026 Introduction The modular monolith architecture strikes a compelling balance between the simplicity of monoliths and the organisation of microservices. Instead of
- [Domain‑driven design without ceremony — Patterns & Anti‑Patterns — Practical Guide (Jun 1, 2026)](https://www.sachith.co.uk/domain‑driven-design-without-ceremony-patterns-anti‑patterns-practical-guide-jun-1-2026/) - Domain‑driven design without ceremony — Patterns & Anti‑Patterns — Practical Guide (Jun 1, 2026) Domain‑driven design without ceremony — Patterns & Anti‑Patterns body { font-family: Arial, sans-serif; line-height:1.6; max-width: 750px; margin: auto; padding: 1em; } h2, h3 { colour: #2c3e50; } pre { background: #f4f4f4; padding: 1em; overflow-x: auto; } code { font-family: Consolas, monospace;
- [Docs‑as‑code with Docusaurus/MkDocs — CI/CD Automation — Practical Guide (May 31, 2026)](https://www.sachith.co.uk/docs‑as‑code-with-docusaurus-mkdocs-ci-cd-automation-practical-guide-may-31-2026/) - Docs‑as‑code with Docusaurus/MkDocs — CI/CD Automation — Practical Guide (May 31, 2026) Docs‑as‑code with Docusaurus/MkDocs — CI/CD Automation .audience { font-weight: bold; margin-bottom: 1rem; } pre { background: #f6f8fa; padding: 1em; overflow-x: auto; } .social { margin-top: 2rem; font-style: italic; color: #555; } Docs‑as‑code with Docusaurus/MkDocs — CI/CD Automation Level: Intermediate May 31, 2026 Adopting
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- [Laravel API on Docker with GHCR - End-to-End Playbook](https://www.sachith.co.uk/laravel-api-on-docker-with-ghcr-end-to-end-playbook/) - Tech stack: Laravel (APIs & Scheduler), PHP 8.4, MySQL 8.4, Nginx — everything in Docker containers. Environments: Local development → Dev → Prod Source control: Private GitHub repo (my-laravel-project) Security stance: No secrets in Git ever; never bake secrets into images; pin prod images by digest; use Docker secrets in prod. Table of Contents Phase
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- [Hello & Welcome](https://www.sachith.co.uk/hello/) - Welcome to my home page. If you'd like to leave a feedback or report a bug please email me onsachithd [at] gmail [dot] com
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## Pages

- [Portfolio](https://www.sachith.co.uk/portfolio/) - Some of my work… Apps on Google Play Sinhala Dictionary Offline (Youtube) Sinhala Tamil English Dictionary Tamil Dictionary Offline Tamil English Dictionary Sinhala Chords Sinhala Lyrics Apps on Apple App Store Sinhala Dictionary Offline Sinhala English Dictionary Tamil Dictionary Offline Tamil English Dictionary Websites sachith.co.uk (Wordpress) aichilanka.com (Wordpress) aichitech.com (Wordpress) Revamped of barcode-uk.com (OsCommerce) retailepossystems.co.uk (Zen
- [Portfolio](https://www.sachith.co.uk/old-portfolio/) - Some of my work... Android Apps English – Sinhala Dictionary for Android / iOS Tamil - English - German Dictionary for Android Tamil - English Dictionary for Android Web Sites Revamped of www.Barcode-uk.com www.RetailEPoSSystems.co.uk GitHub Other Projects Java C/C++ ASP VB
- [Tamil Dictionary Offline](https://www.sachith.co.uk/tamil-dictionary-offline/) - If you use the languages Tamil and English on a daily basis and live with limited access to the internet, then this is your newest best friend. Tamil Dictionary Offline is a FREE must-have app for English to Tamil / Tamil to English translation purposes, with a database of more than 400,000 words for iOS
- [Tamil English Dictionary](https://www.sachith.co.uk/tamil-english-dictionary/) - Tamil Dictionary is a FREE must-have app for English to Tamil / Tamil to English translation purposes, with a database of more than 400,000 words for iOS 11 and above. A completely user-friendly tool, which could help you progress with your work if you create written pieces of art, news or ideas and enable you
- [Sinhala Dictionary Offline](https://www.sachith.co.uk/sinhala-english-dictionary/) - In a digital era which brings the whole world to your fingertips if you are online, here is something to save you in a connectivity crisis! Welcome to the Sinhala Dictionary Offline, a FREE English to Sinhala / Sinhala to English Dictionary with a database of more than 160,000 words for Android version 2.2 and
- [Sinhala Tamil English Dictionary](https://www.sachith.co.uk/sinhala-tamil-english-dictionary/) - Are you an Android user, visiting Sri Lanka and or residing there, looking for translation help with Sinhala, Tamil and English? Then, Sinhala Tamil English Lexicon is the best answer for you. Welcome to the first Sinhala English dictionary on the Android Market, including translations of English to Tamil / Tamil to English too.Quick and
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- [Home](https://www.sachith.co.uk/home/) - Welcome to my home page. If you'd like to leave a feedback or report a bug please email me onsachithd [at] gmail [dot] com
- [Front Page](https://www.sachith.co.uk/hestia-front/)
- [Privacy Policy - Tamil English Dictionary Offline](https://www.sachith.co.uk/privacy-policy-tamil-dictionary-offline/) - Sachith Dassanayake Net built the Tamil Dictionary Offline app as an Ad Supported app. This SERVICE is provided by Sachith Dassanayake at no cost and is intended for use as is. This page is used to inform visitors regarding our policies with the collection, use, and disclosure of Personal Information if anyone decided to use
- [Privacy Policy - Tamil English Dictionary Online](https://www.sachith.co.uk/privacy-policy-tamil-english-dictionary/) - Sachith Dassanayake built the Tamil English Dictionary app as an Ad Supported app. This SERVICE is provided by Sachith Dassanayake at no cost and is intended for use as is. This page is used to inform visitors regarding our policies with the collection, use, and disclosure of Personal Information if anyone decided to use our
- [Privacy Policy - Sinhala  English Dictionary Online](https://www.sachith.co.uk/privacy-policy-sinhala-english-dictionary/) - Sachith Dassanayake built the Sinhala English Dictionary app as an Ad Supported app. This SERVICE is provided by Sachith Dassanayake at no cost and is intended for use as is. This page is used to inform visitors regarding our policies with the collection, use, and disclosure of Personal Information if anyone decided to use our
- [Privacy Policy - Sinhala Tamil English Dictionary Online](https://www.sachith.co.uk/privacy-policy-sinhala-tamil-online/) - Sachith Dassanayake built the Sinhala Tamil English Dictionary app as an Ad Supported app. This SERVICE is provided by Sachith Dassanayake at no cost and is intended for use as is. This page is used to inform visitors regarding our policies with the collection, use, and disclosure of Personal Information if anyone decided to use
- [Privacy Policy - Sinhala English Dictionary Offline](https://www.sachith.co.uk/privacy-policy-sinhala-dictionary-offline/) - Sachith Dassanayake built the Sinhala Dictionary Offline app as an Ad Supported app. This SERVICE is provided by Sachith Dassanayake at no cost and is intended for use as is. This page is used to inform visitors regarding our policies with the collection, use, and disclosure of Personal Information if anyone decided to use our
- [About Me](https://www.sachith.co.uk/about-me/)
- [Blog](https://www.sachith.co.uk/blog/)
- [Sinhala Transliteration Scheme](https://www.sachith.co.uk/sinhala-transliteration-scheme/)

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