DDevang Pandya20h ago · 8 min readSticky Sessions Explained: The Story of Two Waiters (Load Balancer Session Affinity)By Devang Pandya · Cloud Tech by Devang · Cloud • DevOps • AI — Made Simple This post is the full breakdown for the Two Waiters Reel. If you came here after commenting STICKY, welcome! The story in cloudtechbydevang.hashnode.dev
ZZyVOP2d ago · 5 min readCaching Strategies Compared: Cache-Aside, Write-Through, and Write-BehindEvery cache forces you to answer one question: when data changes, who updates the cache, and when? Reads are the easy half. The write path is where caches go stale, lose data, or slow your app down. T2blog.zyvop.com
Mmuthuselvi3d ago · 6 min readManaged Database Pricing Explained: What You Actually Pay ForPicking a managed database usually starts with a pricing page and ends with a surprise invoice. Egress fees, backup charges, SSL add-ons, and per-query billing can turn a "$20 database" into somethingantryk.hashnode.dev
WWaseem Anjum3d ago · 20 min readPostgres Job Queues in 2026: SKIP LOCKED vs pg-boss vs BullMQ (Redis and Postgres), BenchmarkedA Postgres job queue used to mean one of two things in Node.js: a hand-written FOR UPDATE SKIP LOCKED query or pg-boss. Since BullMQ 6 shipped in July 2026, there is a third option: BullMQ now runs on1fabwaseem.hashnode.dev
AAumCreate3d ago · 6 min readWhich cache layer fixes which slowdown, judged from the response headersThe complaint never says which part is slow. It arrives as 'the site is slow', and the first reaction is to switch on some caching and see whether it feels better. That works often enough to be a trap1aumcreate.hashnode.dev
WWaqas Shahid4d ago · 2 min readRedis Explained: The In-Memory Store That Makes Everything FasterIntroduction Redis is an in-memory data store: it keeps data in RAM instead of on disk, which makes it roughly a hundred times faster than a disk database for simple operations. That speed also means practicaldevblog.hashnode.dev
DDevang Pandya4d ago · 10 min readCaching 101: Why Facebook Keeps So Much in Memcached (and How to Cache Without Breaking Things)By Devang Pandya · Cloud Tech by Devang · Cloud • DevOps • AI — Made Simple This post is the full breakdown for the Bapu ki Class Reel on caching. If you came here after commenting CACHE, welcome. Bap1cloudtechbydevang.hashnode.dev
TTrust Boundary4d ago · 9 min readChatGPT leaked users' data, and nobody hacked itOriginally published at trustboundarystudio.com. The video version, with diagrams, is on YouTube. Key facts When: Monday 20 March 2023. OpenAI says a change to its server at 1 a.m. Pacific time causetrustboundarystudio.hashnode.dev
ZZyVOP5d ago · 11 min readRate Limiting Algorithms: How to Protect Your API Without Annoying Your UsersEvery API eventually meets a client that sends too much traffic. Sometimes it’s a buggy retry loop, sometimes a scraper, and sometimes a perfectly well-meaning customer whose cron job just got ten tim110MCZblog.zyvop.com
AAnish Ansari5d ago · 10 min readSystem Design Drill Day 8: Distributed Locks with Redis and Fencing TokensOne unit of a hot SKU is left, and two customers press "Buy" at the same moment on two different app servers. Both see "1 in stock", both checkouts succeed, and one of them gets an apology email. A mu110MCZblog.anishansari.com.np
