Shanto Islam is a self-taught, passionate full-stack software engineer and developer from Nazipur, Patnitala, Naogaon, Rajshahi, Bangladesh. Tech-agnostic problem solver building backend systems, data layers, and AI features that stay dependable after launch.https://ishanto.com/https://ishanto.com/post/write-code-that-survives-the-next-engineer/https://ishanto.com/post/write-code-that-survives-the-next-engineer/A full walkthrough of refactoring a real API handler, from separation of concerns and result types to transactions, tests, and the habits that keep code maintainable six months later.Thu, 02 Jul 2026 00:00:00 GMThttps://ishanto.com/post/where-to-draw-service-boundaries/https://ishanto.com/post/where-to-draw-service-boundaries/A deep guide to monoliths, microservices, queues, sagas, caching, and multi-tenant isolation, with real patterns from commerce and SaaS products that grew under load.Thu, 14 May 2026 00:00:00 GMThttps://ishanto.com/post/the-slow-query-i-should-have-caught-in-staging/https://ishanto.com/post/the-slow-query-i-should-have-caught-in-staging/A full database performance postmortem covering schema design, N+1, EXPLAIN plans, indexes, locks, pagination, connection pools, migrations, and when to denormalize.Sun, 08 Mar 2026 00:00:00 GMThttps://ishanto.com/post/from-git-push-to-running-process/https://ishanto.com/post/from-git-push-to-running-process/The full path from commit to production, through CI, Docker, Linux processes, memory, networking, reverse proxies, health checks, scaling, observability, and how to debug when deploys lie.Sun, 18 Jan 2026 00:00:00 GMT