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Tag: distributed-lock

All Frontend Backend Data & AI
Posted on: August 24th, 2025

Idempotency Keys for Payments & Orders: No More Double-Charges, No More Drama

TL;DR — Give each potentially repeatable write (charge card, place […]

  • Why Idempotency Keys Still Matter (Yes, in 2025)
  • What Exactly Is an Idempotency Key?
  • Key Design: Scope, Format, and TTL
  • Storage Patterns: Postgres vs Redis (Fight! …Just Kidding)
  • Concurrency & Locking (No, Not the Thread Kind)
  • [...]
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