DynamoDB to Aurora PostgreSQL: Migrating 43M Records with a Resumable CLI Tool
Feb 16 · 7 min read · Migrated 43 million records from DynamoDB to Aurora PostgreSQL using a resumable CLI migration tool built in Node.js (TypeScript). Final runtime: 2h15m Rows inserted: 12.2M Errors: 0 Idempotent design, file-level checkpointing, and predictable r...
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API Request Deduplication: Prevent Double Process
Feb 12 · 11 min read · Why Traditional Approaches Fail at Scale Five years ago, many teams relied on database unique constraints or simple in-memory caches to prevent duplicates. These approaches break down in 2025's distributed reality. Database unique constraints only wo...
Join discussionAPI Idempotency Keys: Safe Retry Implementation
Feb 12 · 11 min read · Why Traditional Retry Logic Fails at Scale Basic retry mechanisms without idempotency guarantees create race conditions and duplicate operations. The fundamental problem: network timeouts don't tell you whether the server processed your request. Your...
Join discussionIdempotency in Distributed Systems Implementation
Feb 12 · 9 min read · Idempotency in Distributed Systems: A 2025-2026 Implementation Guide Metadata { "seo_title": "Idempotency in Distributed Systems: 2025 Implementation Guide", "meta_description": "Master idempotency patterns in distributed systems with modern Type...
Join discussionIdempotency in Distributed Systems
Feb 12 · 9 min read · Idempotency in Distributed Systems: A 2025-2026 Implementation Guide Metadata { "seo_title": "Idempotency in Distributed Systems: 2025 Implementation Guide", "meta_description": "Master idempotency patterns in distributed systems with modern Type...
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Jan 26 · 9 min read · 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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State in a System
Jan 5 · 10 min read · 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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Understand CronJobs: The Power of Idempotency
Dec 2, 2025 · 3 min read · Welcome to a blog series where we strip away the Kubernetes magic and look at the raw computer science concepts that power your cluster. At a high level, the difference is simple: CronJob (The Alarm Clock): A task designed to finish. It starts, does...
Join discussionKlucze naturalne w CosmosDB: szybsze odczyty i prostsze integracje
Sep 30, 2025 · 5 min read · Wprowadzenie Identyfikatory obiektów (ID) odgrywają kluczową rolę w systemach backendowych i rozproszonych. Zwykle do identyfikacji stosujemy klucze zastępcze (surrogate keys) – generowane losowo (np. GUID) lub sekwencyjnie w bazie danych. Istnieje j...
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