Practical articles about software, technology, and engineering.

OpenStair engineering writing on Flutter, backend systems, documentation, product architecture, open source, and production software delivery.

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Architecture diagram of multi-tier backend caching layers showing L1 in-memory, L2 distributed Redis, and L3 edge CDN
Backend

Caching Strategies for Backend Applications

September 20, 2025 · 21 min read

A comprehensive guide to backend caching architectures, multi-tier topologies, Cache-Aside vs Write-Through patterns, stampede mitigations, and probabilistic eviction.

BackendArchitecturePerformanceDatabases
Diagram showing API clients, request handling, validation, and service responses
Backend

Pagination Strategies for REST APIs

September 18, 2025 · 15 min read

A comprehensive engineering guide to REST API pagination: offset vs keyset cursors, B-Tree index optimization, tiebreaker invariants, and resilient API contracts.

BackendAPIsSoftware EngineeringArchitecture
Diagram showing API clients, request handling, validation, and service responses
Backend

Building Idempotent APIs for Reliable Applications

September 16, 2025 · 18 min read

A practical guide to designing idempotent APIs: HTTP semantics, Idempotency-Key headers, atomic distributed locks, payload hashing, replay caches, and database patterns.

BackendAPIsSoftware EngineeringArchitecture