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#idempotence

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MTMd Tarikul Islamfreecodecamp.orgJun 13 · 21 min read

The Saga Pattern in Node.js: How to Roll Back Distributed Transactions Across Microservices

Building reliable workflows across multiple microservices is challenging. In a monolith, a database transaction can ensure that multiple operations either succeed or fail together. But once data is sp

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EYErnesto Yanac Huertasernestoyanac.comMay 23 · 5 min read

How to Implement Idempotency in a NestJS + PostgreSQL Stack (Without Losing Sleep Over Duplicate Requests)

How to Implement Idempotency in a NestJS + PostgreSQL Stack If you've ever built a payment flow or an order creation endpoint, you've probably faced this scenario: the user clicks "Submit", the networ

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DLDayul Leelukyday.hashnode.devMay 13 · 14 min read

Network Part 5 - CDN, WebSocket, and Idempotency: When the Parts Meet Traffic

In Part 2, the TCP handshake cost was a fundamental transaction cost for every connection. In Part 3, HTTP underwent three structural shifts to overcome that specific cost. In Part 4, load balancers d

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PKPatrick Kearnsdotnetdigest.comMay 4 · 22 min read

Add Idempotency to a Distributed .NET System Without MediatR

Idempotency is not a MediatR feature. Its not a pipeline behaviour. Its not a middleware trick. In a distributed system, idempotency is a consistency guarantee around a side effect. That guarantee bel

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NVNguyễn Việt Tùngdevpath-traveler.nguyenviettung.id.vnFeb 1 · 6 min read

Idempotency: The Most Important Word in Cron You’re Probably Ignoring

If cron has a single moral lesson, it’s this: time does not guarantee uniqueness. Jobs run twice. Or zero times. Or half a time. Or later than expected. Cron does not promise exactly once execution, and every system that assumes it does eventually pa...

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SSSurya Sathiblog.suryasathi.comJan 26 · 9 min read

Idempotency

When you read about idempotency the first time, it sounds reasonably precise and simple. The definition is short: performing the same operation multiple times should have the same effect as performing it once. On paper, it feels like a solid guarante...

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NVNguyễn Việt Tùngdevpath-traveler.nguyenviettung.id.vnJan 17 · 7 min read

Anatomy of a Cron Job

Cron failures are rarely dramatic. There’s no stack trace on your screen, no angry user clicking refresh. Instead, something subtle doesn’t happen. A report isn’t generated. A cleanup never runs. A notification arrives late—or twice. And when you inv...

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ASAnkan Sahablog.ankan.inJan 11 · 3 min read

Learning Reliable System Design from a Tiny API Glitch

Today, I was working on an admin panel feature. Simple task.One button.One API. 👉 “Create Policy” I clicked the button. Policy created ✅Clicked again (by mistake)…Another policy created ❌Clicked again (slow network)…Boom — three duplicate records. N...

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SSSurya Sathiblog.suryasathi.comJan 5 · 10 min read

State in a System

Assume you are making a very simple login system. A user sends a request with a username and password. Let us list down what all needs to be present in the system. If the credentials are valid, a session should be created. All the authorized action...

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ARAndrey Roshchupkinsdet-andrew.hashnode.devNov 20, 2025 · 13 min read

The Absence of Errors Double Fallacy: Introducing the New HTTP Method GOAT

Introduction: The Interview Paradox Picture this: you're sitting in an interview, and the interviewer asks, "What HTTP status codes do you know?" or "What's the difference between GET and POST?" Almost every candidate confidently rattles off the same...

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#idempotence

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#idempotence

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Trending tags this week

The Saga Pattern in Node.js: How to Roll Back Distributed Transactions Across Microservices

How to Implement Idempotency in a NestJS + PostgreSQL Stack (Without Losing Sleep Over Duplicate Requests)

Network Part 5 - CDN, WebSocket, and Idempotency: When the Parts Meet Traffic

Add Idempotency to a Distributed .NET System Without MediatR

Idempotency: The Most Important Word in Cron You’re Probably Ignoring

Idempotency

Anatomy of a Cron Job

Learning Reliable System Design from a Tiny API Glitch

State in a System

The Absence of Errors Double Fallacy: Introducing the New HTTP Method GOAT