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ZZyVOPzyvop.hashnode.devSep 8 · 8 min read

Implementing Full-Text Search in NestJS with TypeORM and PostgreSQL

Search is one of those features that looks simple until you actually have to build it. A naive LIKE '%term%' query works for a demo, but it ignores word forms, ranking, and typos, and it gets slow fas

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DSDoogal Simpsondoogal.devSep 5 · 5 min read

Bloom Filters: Prevent Expensive Database Queries

Let’s face it: querying a database or hitting a Redis cache just to check if an ID exists is a massive waste of resources when 99% of the time the answer is "no". If you do this millions of times a se

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NSNilay Shahanecuriousnilay.hashnode.devAug 15 · 8 min read

I Tried Designing a Distributed Rate Limiter. Here’s Every Place It Broke.

Somewhere out there is a client with a bug — a while (true) loop with a missing break condition, hammering /api/order/create as fast as the network allows. while (true) { await fetch('/api/order/cre

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DPDevesh Parmarbackend-bytes.hashnode.devAug 7 · 6 min read

Why Every Microservice Eventually Needs a Queue

Imagine you're the engineer at a UPI payments app. The Transaction Service debits the sender's account and calls the Settlement Service directly over HTTP to credit the receiver and mark the transacti

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DSDoogal Simpsondoogal.devJul 18 · 5 min read

Designing Idempotent APIs and Resilient Pipelines

Networks are inherently unreliable, meaning API requests often fail or retry, resulting in duplicate actions. Implementing idempotency keys—unique identifiers sent by the client—ensures your system pr

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DSDoogal Simpsondoogal.devJul 18 · 5 min read

Idempotency Explained: Handling Duplicate API Requests

Quick Answer: Idempotency is a system property where making the same request multiple times produces the same result as making it once. By passing a unique idempotency key with each request, servers c

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DJDeepak Jainmarkdownsimplified.hashnode.devJul 13 · 6 min read

Building a Payment Pipeline That Doesn't Lose Money

If you've ever built a payment feature, you know the fear. It's not "will this work?" It's "what happens the one time it doesn't?" A payment button looks simple from the outside. Tap, pay, done. But u

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KKKushneet Kaurcloudnativebykushneet.hashnode.devJun 16 · 5 min read

Containers vs. Virtual Machines

Every developer has lived through this nightmare. You spend three sleepless nights perfecting a feature. It runs flawlessly on your laptop. You push it to production — or hand it to a teammate — and b

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MMediuswaremediusware.hashnode.devJun 8 · 9 min read

What Is Flask Used For in Python Development?

Many Python projects start simple. A few endpoints. A small dashboard. A lightweight backend. Maybe an internal tool that helps one team move faster. Then the project grows. New users arrive. More fea

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ISIshanka Sonalisonaa.hashnode.devApr 30 · 4 min read

Why Test-Driven Development (TDD) Works So Well in Agile : A Real-World Perspective

Introduction In modern software development, speed and quality are often seen as trade-offs. Teams want to deliver features quickly, but frequent changes can introduce bugs and instability. This is wh

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#backenddevelopment

Explore Hashnode

Trending tags this week

Implementing Full-Text Search in NestJS with TypeORM and PostgreSQL

Bloom Filters: Prevent Expensive Database Queries

I Tried Designing a Distributed Rate Limiter. Here’s Every Place It Broke.

Why Every Microservice Eventually Needs a Queue

Designing Idempotent APIs and Resilient Pipelines

Idempotency Explained: Handling Duplicate API Requests

Building a Payment Pipeline That Doesn't Lose Money

Containers vs. Virtual Machines

What Is Flask Used For in Python Development?

Why Test-Driven Development (TDD) Works So Well in Agile : A Real-World Perspective