DPDivyam Patroinblog.divyampatro.dev·15h ago · 12 min readClearCode Part 5: Semantic Caching, Incremental Indexing, and the Hardest Part of CachingWhere Part 4 left us Part 4 built the tasks layer: structured plan generation with Pydantic, human-in-the-loop approval before anything runs, serial execution with dependency resolution, an LLM-as-jud00
VMVedant Manjrekarinvedant-manjrekar.hashnode.dev·10h ago · 9 min readBuilding the Backend Was Easy. Deploying It Changed How I Think About Systems.There's a moment in almost every side project where you lean back, stare at a terminal full of passing tests, and think: "Cool. Now I just have to deploy it." I hit that moment a few weeks ago. And 00
VSVigneshkumar Selvarajincode-by-vignesh.hashnode.dev·1d ago · 7 min readHow Redis Caching Actually Works (Explained Like You're 5, But for Developers)When I started learning Redis, I had one big question: "If thousands of people are using the same app at the same time, how does the app know whose data belongs to whom?" Turns out, the answer is simp00
SSomeshinengineering-som-blog.hashnode.dev·1d ago · 12 min readRedis-Inspired Distributed Key-Value Store from Scratch in Javaoverview: TCP engine, LRU eviction, AOF write-ahead log, primary-replica replication, consistent hashing — every subsystem hand-rolled. Here's what the code actually does, verified line by line. When 00
RBRakesh Bhandarkarinrakesh-codex.hashnode.dev·2d ago · 6 min readImplementing Idempotency Correctly in Payment GatewaysDuplicate transactions are one of the most common failure modes in distributed payment systems. In this article, we’ll explore how idempotency works, why atomic writes matter, and how to implement a p00
JTJakson Tateinservermo.hashnode.dev·2d ago · 4 min readHow to Install KeyDB on Ubuntu: The Multi-Threaded Redis AlternativeTraditional in-memory databases process commands sequentially, utilizing a single thread exclusively. While recent updates introduced asynchronous network threading, core execution often remains isola00
PPPrajapati Pareshinsmarttechdevs.hashnode.dev·3d ago · 3 min readScale Webhook Ingestion with RedisThe Webhook Storm Vulnerability When integrating with third-party enterprise platforms like Stripe, Shopify, or Twilio at Smart Tech Devs, your application must expose public webhook endpoints. These 00
PPPrajapati Pareshinsmarttechdevs.hashnode.dev·4d ago · 3 min readCentralized Session Scaling with RedisThe Stateless Server Trap When you start building a SaaS platform at Smart Tech Devs, Laravel defaults to saving user session states inside flat files on your local hard drive (storage/framework/sessi00
FFavein0xfave.hashnode.dev·6d ago · 8 min readI Built a Production Job Queue Without Redis — Here's Why PostgreSQL LISTEN/NOTIFY Was EnoughI saw Arjay McCandless's TikTok video on "3 Projects to Master System Design" and went with number 3: a job queue. When I shared my architecture in the comments, everyone said the same thing: "You nee00
AOAdekola Olawaleinadekolaolawale.hashnode.dev·6d ago · 19 min readHow I Built a Production-Grade Fintech Payment API with Node.js, Fastify & BullMQTL;DR: Fastify over Express: Schema-first routes, auto-generated OpenAPI docs, and faster serialization. Raw SQL (pg) over ORM: Manual BEGIN/COMMIT gives precise transaction control and clarity. Po00
