SGSergio González Téllezinevankhandev.hashnode.dev·32m ago · 2 min readWhy does an apparently simple optimization often become a system’s first real architectural decision?SEED-008 PROBLEM Why does an apparently simple optimization often become a system’s first real architectural decision? INSIGHT In SQL, indexes are one of the first places where a real architectural 00
FFavein0xfave.hashnode.dev·5h 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·11h 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
CAChukwuemeka Aladimmainblog.acel.dev·13h ago · 7 min readIt Worked on Every Environment Except Prod: Getting Daily Reports Right Across TimezonesEvery day, a report runs: "what did each store sell yesterday?" One of the stores is in Lagos, the other in London. The report showed both stores as having zero sales for the last two hours of the day00
AAAdrian Aniinadrianani.hashnode.dev·13h ago · 4 min readThe blueprint: an HTML-to-PDF API on Postgres, Chromium, and not much elsePDF generation in 2026 is glued together from Puppeteer, LiquidJS, and S3. What's not solved by the glue is the production shape around it: Documents range from 50 KB to hundreds of megabytes. Memory00
ATApoorv Tyagiinapoorvtyagi.tech·2d ago · 14 min readHow to Size Java Database Connection Pools in KubernetesIntroduction I was reviewing a PR at work a month ago where a new application was setting up its database service, and I saw the connection pool properties, which made me think about how a small confi00
PPPrajapati Pareshinsmarttechdevs.hashnode.dev·2d ago · 3 min readRead/Write DB Separation in LaravelThe Reporting Traffic Jam As your B2B SaaS platform at Smart Tech Devs scales, a dangerous database bottleneck emerges between your standard users and your admin team. Imagine a regular user submittin00
CDCoding Dropletsincodingdroplets.com·3d ago · 12 min readHow to Build a Job Queue in .NET with PostgreSQL SKIP LOCKED: A Real-World WalkthroughEvery .NET team eventually needs to run work outside the request cycle: send the welcome email, generate the invoice PDF, push the webhook, re-index the search document. The default instinct is to rea00
TFTheophilus Frimponginlittlegod.hashnode.dev·3d ago · 6 min readThe Retry Trap: Why I Added Exponential Backoff to My Job QueueDid you know that retrying when a job fails can be more harmful than you anticipate? The first instinct for every developer is to retry when a job has failed and that is usually recommended, right? I 00
NUNoor ul Hassaninengineeringdeepdives.hashnode.dev·3d ago · 7 min readHow to Prevent Users from Overwriting Each Other's Data: Optimistic Locking in Next.js & PrismaImagine you're building a collaborative business dashboard. Two project managers are reviewing the same contract at the same time. The contract currently has a budget of $4,000. Manager A updates the 00
