<![CDATA[Stories by Feildrix on Medium]]> https://medium.com/@feildrixliemdra?source=rss-abe56663c5bc------2 https://cdn-images-1.medium.com/fit/c/150/150/1*t1MmrPIfbw9FSpRyiaEtQQ.jpeg Stories by Feildrix on Medium https://medium.com/@feildrixliemdra?source=rss-abe56663c5bc------2 Medium Wed, 04 Nov 2026 15:00:50 GMT <![CDATA[Go sync.Mutex and sync.RWMutex: Lock It Right the First Time]]>

Stop treating mutexes as an afterthought — your production service’s correctness depends on them

Continue reading on Medium »

]]> https://medium.com/@feildrixliemdra/go-sync-mutex-and-sync-rwmutex-lock-it-right-the-first-time-686745396b26?source=rss-abe56663c5bc------2 https://medium.com/p/686745396b26 Tue, 30 Jun 2026 00:01:02 GMT 2026-06-30T00:01:02.452Z <![CDATA[Monolith vs Microservices in Go: The Decision Framework, Not the Hype Cycle]]>

Why Go’s tooling makes the modular monolith the safer default — and exactly when it’s worth paying for the split

Continue reading on Medium »

]]> https://medium.com/@feildrixliemdra/monolith-vs-microservices-in-go-the-decision-framework-not-the-hype-cycle-604dfd79c34b?source=rss-abe56663c5bc------2 https://medium.com/p/604dfd79c34b Mon, 29 Jun 2026 05:29:45 GMT 2026-06-29T05:29:45.212Z <![CDATA[Go Arrays vs Slices: A Deep Comparison That Will Change How You Write Go]]>

The most misunderstood duality in Go — and the subtle bugs it quietly ships to production

Continue reading on Medium »

]]> https://medium.com/@feildrixliemdra/go-arrays-vs-slices-a-deep-comparison-that-will-change-how-you-write-go-954a4b4f93b5?source=rss-abe56663c5bc------2 https://medium.com/p/954a4b4f93b5 Thu, 11 Jun 2026 04:51:24 GMT 2026-06-11T04:51:24.647Z <![CDATA[Concurrency vs Parallelism in Go: They’re Not the Same Thing]]>

Stop Using These Words Interchangeably — Your Production Code Depends on It

Continue reading on Medium »

]]> https://medium.com/@feildrixliemdra/concurrency-vs-parallelism-in-go-theyre-not-the-same-thing-937d981333cf?source=rss-abe56663c5bc------2 https://medium.com/p/937d981333cf Tue, 09 Jun 2026 03:36:20 GMT 2026-06-09T03:36:20.130Z <![CDATA[Go Database Transactions Done Right]]>

The defer trick, the DBTX interface, and how to keep transactions clean across your repository.

Continue reading on Medium »

]]> https://medium.com/@feildrixliemdra/go-database-transactions-done-right-bef77e85c12b?source=rss-abe56663c5bc------2 https://medium.com/p/bef77e85c12b Mon, 08 Jun 2026 00:01:02 GMT 2026-06-08T00:01:02.325Z <![CDATA[Idempotency in Go: Stop Charging Your Users Twice]]>

A practical guide to building retry-safe APIs with idempotency keys, atomic stores, and Go middleware — before the 2 AM incident happens

Continue reading on Medium »

]]> https://medium.com/@feildrixliemdra/idempotency-in-go-stop-charging-your-users-twice-c4b09ee2675d?source=rss-abe56663c5bc------2 https://medium.com/p/c4b09ee2675d Mon, 01 Jun 2026 00:01:00 GMT 2026-06-01T00:01:00.822Z <![CDATA[CORS in Go: From “Blocked by Policy” to a Secure Implementation]]>

CORS is not a server feature — it’s a browser security mechanism.

Continue reading on Medium »

]]> https://medium.com/@feildrixliemdra/cors-in-go-from-blocked-by-policy-to-a-secure-implementation-fea99bd9deaa?source=rss-abe56663c5bc------2 https://medium.com/p/fea99bd9deaa Fri, 29 May 2026 05:01:34 GMT 2026-05-29T05:01:34.045Z <![CDATA[RBAC in Go — From a Hand-Rolled Approach to Casbin]]>

From simple role checks to policy-driven authorization — and knowing when each one is enough.

Continue reading on Medium »

]]> https://medium.com/@feildrixliemdra/rbac-in-go-from-a-hand-rolled-approach-to-casbin-c8f8b1cc4700?source=rss-abe56663c5bc------2 https://medium.com/p/c8f8b1cc4700 Tue, 26 May 2026 04:21:52 GMT 2026-05-26T04:21:52.062Z <![CDATA[Auth Middleware in Go — Protecting Routes across net/http, Chi, Gin, and Echo]]>

Go Auth Middleware — One Function to Protect Them All, across net/http, Chi, Gin, and Echo

Continue reading on Medium »

]]> https://medium.com/@feildrixliemdra/auth-middleware-in-go-protecting-routes-across-net-http-chi-gin-and-echo-d72ef39bc2e8?source=rss-abe56663c5bc------2 https://medium.com/p/d72ef39bc2e8 Thu, 21 May 2026 00:01:01 GMT 2026-05-21T00:01:01.828Z <![CDATA[JWT in Go from Scratch — Access Tokens, Refresh Tokens, and Getting Validation Right]]>

Understand JWT structure, build a secure access & refresh token system, and avoid the most dangerous implementation pitfalls.

Continue reading on Medium »

]]> https://medium.com/@feildrixliemdra/jwt-in-go-from-scratch-access-tokens-refresh-tokens-and-getting-validation-right-89c549ef099e?source=rss-abe56663c5bc------2 https://medium.com/p/89c549ef099e Wed, 20 May 2026 00:01:01 GMT 2026-05-20T00:01:01.362Z