Why Your Postgres Table Keeps Growing Even Though You're Deleting Rows
A while back I noticed something odd. A table with a modest number of rows was taking far more disk space than it should. SELECT count(*) said one t…
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C# Concepts Every .NET Backend Developer Should Know in 2026
A .NET API can feel perfectly fine with a little traffic and then start struggling as the app grows. Queries get slower, outgoing HTTP calls hold on…
Running 100 agents on a free tier (Groq 30 RPM, Tavily credits)
GridMind is a spreadsheet where every cell is its own research agent. You type "Stripe" in a row, "who is the CEO?" in a column, hit Run, and an age…
ACH Return Codes Explained: R01 to R85 and How to Handle Them
ACH Return Codes Explained: R01 to R85 and How to Handle Them ACH Return Codes Explained: R01 to R85 and How to Handle Them When an ACH transaction…
Model Instruments as First-Class Records: Calibration Status, Check Readings and Out-of-Tolerance Holds in a Food ERP
By Isaac Muthui, CEO, Tamalaki Business Network Ltd. Originally published at factoraerp.com . Most factory software treats a measurement as a number…
Processing 1,249 Finished Matches: Pipeline Notes
One match day, 1,249 finished matches across the data set. The daily export landed with 546 standings rows, 200 scorer lines and 418 rows of match s…
Scheduled Cleanup Jobs: 4 Boundaries for Retries, Dead Letters, Latency, and Cost
Short answer: trigger one idempotent sweep on a schedule, enqueue one small cleanup job per tenant or partition, and let a rate-limited worker own r…
A REST API State Machine for Email Verification
Email verification looks like a small feature: create a token, send a message, and accept the token when the user clicks it. In a production backend…
How to Build an IT Asset Assignment and Return System (SQL + REST API)
Imagine your company has 50 employees and 80 IT assets, including laptops, monitors, and smartphones. An employee leaves the organisation. HR confir…
One Long Job Took Down Our Whole Redis Streams Worker Pool
We run a small fleet of Python workers on top of Redis Streams. One night, a single long-running job quietly took the entire interactive pool offlin…
The newest deploy is almost never the cause. So I gave on-call a graph.
The newest deploy is almost never the cause. So I gave on-call a graph. (On-call Brain, Graph Hacks by WeMakeDevs x FalkorDB) It's 3 am. Your phone…
Designing a Distributed Cache Inspired by The Lord of the Rings: One Insight to Rule Them All
The Quest Begins (The "Why") Ever felt like your application is constantly begging the database for the same piece of data over and over? I remember…
APIWatch: Checking API Traffic and Subscription Controls with WSO2 API Manager
I recently worked on a project called APIWatch using Python and WSO2 API Manager. It is a small monitoring tool that reads API traffic logs and help…
Your company's knowledge doesn't go missing. It goes wrong.
How we built Strata, a company brain on FalkorDB that notices when a document has become false, for Graph Hacks. Code: https://github.com/manasdutta…
why pg‑bouncer can still choke your service under burst load
problem statement in a typical microservice, each instance opens its own pg client pool. during a traffic spike the aggregate connection count can e…
Exponential Backoff Isn't Enough: The Retry Storm Hiding in Your Recovery Path
The problem A dependency blips for 400ms — a deploy, a GC pause, a brief network partition, doesn't matter which. Every client with an in-flight req…
Building GoRoute: An Ultra-Lightweight (<15MB RAM) LLM Gateway in Go
Most developers using terminal coding agents like Claude Code , OpenCode , Codex , or Cursor end up running an LLM router in the background to handl…
I Built a Pixiv Alternative in Go (and Taught It SEO)
Pixiv is wonderful. It's also, architecturally, a black box you can't learn from. So I built my own illustration community platform — Lumiina — live…
Version the wire schema, normalize at the boundary, and keep failures visible
Problem statement When you change a function-calling or Structured Outputs schema after users have active conversations, older turns and replayed to…
Tracing Fraud Rings with a Graph: What I Learned Building with FalkorDB
Banks flag suspicious transactions all day. The hard part isn't the flag—it's seeing what's behind it. Fraud rings can hide in relationships: accoun…
5 Common JSON Mistakes That Break API Requests (With Fixes)
JSON is one of the most common formats used to exchange data between frontend applications, backend services, and APIs. It looks similar to a JavaSc…
I'm 13. I Spent 101 Days Building a Secure Social Network with Node.js
Hey dev community! 👋🏻 I'm Seif, a software engineer with 4 years of experience who absolutely hates vibe-coding and prefers designing architecture b…
Retry Storms: Hardening n8n Workflows Against Thundering Herd Failures
A 90-second upstream blip doesn't take you down. What your retries do in the ninety seconds after it ends does. We learned this the expensive way. A…
AsyncLocalStorage vs Scope.REQUEST in NestJS: Fixing a Multi-Tenant Data Leak Without Killing Performance
A while ago in a high-scale multi-tenant B2B SaaS platform, we ran a high-concurrency benchmark before launching an enterprise data portal. Everythi…
Your Dashboard Says "Live" — Prove It With Freshness Watermarks
I once shipped a monitoring page that said LIVE in confident green letters. It stayed green for eleven days while the ingest job behind it had been…
A $16,500 GCP bill nobody could explain. Logging was $3,800
The GCP account I remember most clearly had a billing problem nobody could locate Medium-sized SaaS company. Four GCP projects. Total monthly spend:…
Securing a .NET API with JWT Authentication Using Clean Architecture
When building a RESTful API, securing your endpoints is just as important as the business logic itself. While implementing JWT (JSON Web Tokens) in…
Testing Idempotency, Webhooks, and Race Conditions in Payment APIs
Payment bugs do not always originate from a missing patch or weak password. Some appear when two requests arrive almost simultaneously, a callback i…
AI Can Build Your React UI in Seconds. What About the Backend?
A few weeks ago, I opened Cursor and gave Claude a single prompt: "Generate a modern task management dashboard with filtering, search, pagination, a…
Travel Planner Retrieval Design with Bounded Access Rules and Source Citations
Short answer: a travel itinerary planner needs a staged retrieval architecture with bounded access rules and source context attached to every answer…