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Scaling Backend Services: Because Latency Builds Character
3+ hour, 22+ min ago (311+ words) Before we begin, ask yourself a simple question: What does service performance mean to you? What undeniable proof do you have that your service is not performing well—or vice versa? You see, this question solves the first problem in…...
Load Balancing: How Backend Systems Handle Millions of Requests
4+ hour, 39+ min ago (1652+ words) Imagine you have built a backend API that works perfectly. You deploy it to a server, connect your database, and everything is running smoothly. Then your application becomes popular. Instead of 100 requests per minute, you're suddenly handling 10,000. Then 100,000. Your single…...
10 EF Core Performance Mistakes That Ship to Production
4+ hour, 40+ min ago (209+ words) If your API is fast with seed data but slows down in production, EF Core is rarely the root cause. It... Tagged with dotnet, efcore, performance....
How to Tell Whether Your Slow Query Is a Planning or an Execution Problem | HackerNoon
10+ hour, 16+ min ago (911+ words) Every EXPLAIN ANALYZE prints two numbers at the bottom, and most engineers read only one of them. Planning Time is how long Postgres spent deciding how to answer your query, while Execution Time is how long it spent actually answering…...
I built BulkImgConvert: compress, resize, crop & convert images 100% in your browser
7+ hour, 11+ min ago (289+ words) Hi DEV community! I kept running into the same annoyance: I had a batch of images to compress, resize, or convert, and every online tool I found meant uploading my files to some server first. So I built BulkImgConvert (https://bulkimgconvert.com),…...
Testing Best Practices Skill in Laravel Boost v2.6.0
7+ hour, 57+ min ago (207+ words) Or try paginated search → Laravel Boost v2.6.0 introduces a unified testing best practices skill to guide AI coding agents, database-enforced read-only transactions for the DatabaseQuery MCP tool, and fixes for skill management. This release consolidates testing guidance into a single testing-best-practices…...
I Replaced React Query With 25 Lines of Vanilla JS
3+ hour, 22+ min ago (32+ words) React Query is 13KB and solves problems most apps don't have. I replaced it with a 25-line useFetch hook that handles caching, race conditions, loading state, and error handling — with zero dependencies....
Your local RAG isn't slow — it re-reads every document on every question
10+ hour, 31+ min ago (1600+ words) A user opens a project with nine files in it, types the most obvious question anyone types at a document app — "what are these documents about?" — and waits. Then they ask a second question, about one of those documents, and…...
358 MB RSS, 52 MB live heap: where the rest went
10+ hour, 56+ min ago (211+ words) I was debugging a Rust service that had about 52 MB of live allocations but was sitting at 358 MB RSS. I expected allocator fragmentation or retained pages. The actual cause was Transparent Huge Pages interacting with jemalloc and the allocation pattern…...
7 Database Habits That Halved System Errors and Saved Me Hours of My Life
6+ hour, 55+ min ago (37+ words) Stop firefighting. How to architect a database environment that doesn’t wake you up at 3:00 AM. For the first few years of …...