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Backend Systems.
Backend engineering guides: API design, databases, queues, streaming, performance, and reliability patterns for AI-heavy systems.
API Versioning Strategies That Work in Production
API versioning strategies compared — URL, header, media type, and query versioning — with FastAPI and Go code, deprecation headers, and migration plans.
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Database Schema Migrations Without Downtime
Database Schema Migrations Without Downtime guidance for engineers: compare architecture choices, avoid failure modes, and ship a measurable, reliable.
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Feature Flags in Production: Beyond On/Off
Learn feature flags in production through concrete architecture trade-offs, failure modes, rollout controls, and production measurement practices.
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JWT vs Session Tokens: Which to Use
JWT vs Session Tokens guidance for engineers: compare architecture choices, avoid failure modes, and ship a measurable, reliable production implementation.
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Monorepo vs Multi-Repo: Engineering Tradeoffs
Monorepo vs multi-repo comparison for repository strategy — with scaling patterns, CI/CD optimization, tooling analysis, and when to use each approach.
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Multi-Tenancy Patterns: Database Strategies for SaaS
Learn multi-tenancy patterns through concrete architecture trade-offs, failure modes, rollout controls, and production measurement practices.
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Redis vs Valkey What Changed After the Fork (Complete Guide)
Redis vs Valkey What Changed After the Fork (Complete Guide) guidance for engineers: compare architecture choices, avoid failure modes, and ship a.
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SQLite in Production: When It Beats PostgreSQL (Guide)
SQLite in Production guidance for engineers: compare architecture choices, avoid failure modes, and ship a measurable, reliable production implementation.
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Structured Logging: Stop Using fmt.Println() in Production
Structured Logging guidance for engineers: compare architecture choices, avoid failure modes, and ship a measurable, reliable production implementation.
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Webhook Design for Reliability at Scale: Production Patterns
Webhook Design for Reliability at Scale guidance for engineers: compare architecture choices, avoid failure modes, and ship a measurable, reliable.
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WebSockets vs SSE vs Long Polling: The Decision Guide
Learn websockets vs sse vs long polling through concrete architecture trade-offs, failure modes, rollout controls, and production measurement practices.
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API Design Mistakes That Kill Performance: Fixes That Work
Eight API design mistakes that kill performance — N+1 calls, over-fetching, offset pagination, sync side effects — with Go, Python, and TypeScript fixes.
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Background Job Processing Patterns for Async Workloads
Background job processing patterns that survive production: database queues, Redis workers, cron, event-driven consumers, retries, idempotency, and DLQs.
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CQRS in Practice: Commands, Queries, and Projections
CQRS in practice without the buzzwords: command handlers, denormalized read models, async projections, rebuild strategies, and when not to use it.
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Database Connection Pooling: Sizing, HikariCP & pgBouncer
Database connection pooling from first principles: the pool sizing formula, HikariCP and SQLAlchemy configs, pgBouncer modes, and catching leaks.
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Event-Driven Architecture: When to Use It and How to
Learn event-driven architecture through concrete architecture trade-offs, failure modes, rollout controls, and production measurement practices.
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FastAPI vs Gin vs Express: Backend Framework Comparison
FastAPI vs Gin vs Express compared for production APIs — performance benchmarks, developer experience, typing, ecosystem, and when to pick each in 2026.
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Go vs Python Backend Benchmarks: Real Numbers for
Learn go vs python backend benchmarks through concrete architecture trade-offs, failure modes, rollout controls, and production measurement practices.
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gRPC vs REST vs GraphQL: How to Choose the Right API
Learn grpc vs rest vs graphql through concrete architecture trade-offs, failure modes, rollout controls, and production measurement practices.
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Idempotency in Distributed Systems: Implementation Guide
Learn idempotency in distributed systems through concrete architecture trade-offs, failure modes, rollout controls, and production measurement practices.
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Outbox Pattern for Guaranteed Message Delivery
Outbox Pattern for Guaranteed Message Delivery guidance for engineers: compare architecture choices, avoid failure modes, and ship a measurable,.
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PostgreSQL FOR UPDATE SKIP LOCKED: Production Queue Pattern
Learn postgresql for update skip locked through concrete architecture trade-offs, failure modes, rollout controls, and production measurement practices.
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PostgreSQL Performance Secrets Developers Miss (Guide)
PostgreSQL Performance Secrets Developers Miss (Guide) guidance for engineers: compare architecture choices, avoid failure modes, and ship a.
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Rate Limiting Strategies Beyond Simple Counters
Rate Limiting Strategies Beyond Simple Counters guidance for engineers: compare architecture choices, avoid failure modes, and ship a measurable,.
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Saga Pattern for Distributed Transactions
Saga Pattern for Distributed Transactions guidance for engineers: compare architecture choices, avoid failure modes, and ship a measurable, reliable.
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System Design for 10M Users: Practical Architecture Guide
Learn system design for 10m users through concrete architecture trade-offs, failure modes, rollout controls, and production measurement practices.
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