Personal thoughts on self-development and reflection, sometimes about tech.https://irvanmahendra.com/en-ushttps://irvanmahendra.com/blog/how-to-write-effective-blameless-postmortems-a-guide-to-learning-from-incidents/https://irvanmahendra.com/blog/how-to-write-effective-blameless-postmortems-a-guide-to-learning-from-incidents/Incidents are inevitable — what matters is how your team responds. Learn how to write blameless postmortems that turn failures into learning opportunities without creating a culture of fear.Thu, 04 Dec 2025 00:00:00 GMThttps://irvanmahendra.com/blog/balancing-perfection-and-pragmatism-in-software-development/https://irvanmahendra.com/blog/balancing-perfection-and-pragmatism-in-software-development/Clean code and perfect architecture sound great, but sometimes business reality demands we just ship it. How can engineers balance both worlds?Sat, 10 May 2025 00:00:00 GMThttps://irvanmahendra.com/blog/in-praise-of-legacy-code-why-bad-code-deserves-respect/https://irvanmahendra.com/blog/in-praise-of-legacy-code-why-bad-code-deserves-respect/Legacy code is often seen as a burden, but without it, most companies wouldn’t even exist. Let’s explore why we should respect it, not just hate it.Mon, 03 Mar 2025 00:00:00 GMThttps://irvanmahendra.com/blog/the-uneasy-side-of-building-automation-tools/https://irvanmahendra.com/blog/the-uneasy-side-of-building-automation-tools/A reflection on being asked to build automation tools that may make certain roles redundant—between pride in efficiency and the guilt of displacement.Wed, 04 Dec 2024 00:00:00 GMThttps://irvanmahendra.com/blog/tbd-and-backward-compatibility/https://irvanmahendra.com/blog/tbd-and-backward-compatibility/A comprehensive, sequential guide to Trunk-Based Development (TBD) with SaaS-focused examples (HRIS & e-sign), backward compatibility patterns, gradual rollout playbooks, and an INT→DECIMAL subscription migration case study.Tue, 17 Sep 2024 00:00:00 GMThttps://irvanmahendra.com/blog/distributed-locks-deep-dive/https://irvanmahendra.com/blog/distributed-locks-deep-dive/Prevent race conditions in a single-application architecture: DB row locks, Postgres advisory locks, Redis locks (SET NX PX), and when a unique constraint is all you need.Wed, 03 Jul 2024 00:00:00 GMThttps://irvanmahendra.com/blog/sharding-partitioning-deep-dive/https://irvanmahendra.com/blog/sharding-partitioning-deep-dive/A practical, staged playbook to introduce PostgreSQL partitioning (and later sharding) without rewriting your app.Sat, 27 Apr 2024 00:00:00 GMThttps://irvanmahendra.com/blog/database-migration-zero-downtime/https://irvanmahendra.com/blog/database-migration-zero-downtime/Learn strategies to migrate your database schema safely without taking production offline.Tue, 06 Feb 2024 00:00:00 GMThttps://irvanmahendra.com/blog/database-indexing-deep-dive/https://irvanmahendra.com/blog/database-indexing-deep-dive/A hands-on methodology to design, validate, and maintain high-impact indexes in a single-app stack.Wed, 01 Nov 2023 00:00:00 GMThttps://irvanmahendra.com/blog/lembur-bukan-prestasi/https://irvanmahendra.com/blog/lembur-bukan-prestasi/Budaya lembur sering dianggap bukti dedikasi, padahal lebih sering merupakan sinyal ada yang keliru dalam cara kita bekerja.Fri, 01 Sep 2023 00:00:00 GMThttps://irvanmahendra.com/blog/membebaskan-diri-dari-validasi-orang-lain/https://irvanmahendra.com/blog/membebaskan-diri-dari-validasi-orang-lain/Kamu baru benar-benar bebas ketika tak lagi bergantung pada tepuk tangan orang lain.Fri, 07 Jul 2023 00:00:00 GMThttps://irvanmahendra.com/blog/mengapa-tidak-semua-pendapat-perlu-dibantah/https://irvanmahendra.com/blog/mengapa-tidak-semua-pendapat-perlu-dibantah/Mengenali kekuatan dalam diam dan kebijaksanaan dalam memilih pertempuranSun, 26 Mar 2023 00:00:00 GMThttps://irvanmahendra.com/blog/hello-world/https://irvanmahendra.com/blog/hello-world/My first blog post — a brief introduction to who I am and what I'll be writing about here.Thu, 01 Dec 2022 00:00:00 GMT