Inbox Pattern in Microservices: Deduplicating Incoming Events
Build an inbox pattern for idempotent consumers: choose dedup keys, design a processed messages table, handle concurrency, retention, testing and trade-offs.
13 min read
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FastAPI Dependency Injection: Scopes, Overrides and Testing
How FastAPI dependency injection resolves a per-request graph, manages app-lifetime resources, cleans up with yield, and stays testable with dependency_overrides.
14 min read
Audit Logging in a Monolith: Triggers vs App Events vs CDC
Compare Postgres audit triggers, application events and change data capture for audit logging in a monolith, with audit table design and a hybrid pattern.
14 min read
tRPC vs gRPC vs REST for Internal TypeScript Service APIs
Compare tRPC, gRPC and REST for internal TypeScript APIs: how contracts, schema evolution and tooling differ, and how to choose based on who owns each end.
17 min read
Local Development for Microservices: Compose, Stubs and Previews
A tiered approach to local development for microservices: Docker Compose for what you change, WireMock stubs for the rest and ephemeral previews.
13 min read
Redis Eviction Policy: Choosing maxmemory Settings Safely
Pick a redis eviction policy per dataset, size maxmemory with real headroom, avoid redis OOM kills, and test eviction under memory pressure before production.
14 min read
Monolith CI by Module: Selective Tests From a Dependency Graph
Cut build time in a monolith repo by selecting CI work per module from a checked-in dependency graph, with path filters, safety nets and required checks handled.
13 min read
Do I Need a Service Mesh? Istio vs Linkerd and When They Pay Off
Learn what a service mesh does, when mTLS, traffic control and observability justify it, how Istio, Linkerd and ambient mesh compare, and how to adopt safely.
15 min read
Secrets Management in Kubernetes: Vault vs SOPS vs Cloud Managers
Compare Vault, SOPS and cloud secret managers for Kubernetes by storage, delivery and rotation, and learn when to combine them with External Secrets Operator.
17 min read
How to Remove Dead Code from a Monolith Safely Using Usage Telemetry
Learn a staged, telemetry-driven process to find and remove dead code in a large monolith: detect unused endpoints, add tombstones, deprecate, flag, then delete.
17 min read
structlog FastAPI Tutorial: JSON Logging with Request ID Context
Set up structlog in FastAPI: bind request IDs via contextvars, route uvicorn and stdlib logs through one processor chain, and emit correlated JSON logs.
13 min read
PostgreSQL Zero Downtime Migration: Expand and Contract in Practice
Run PostgreSQL schema changes without outages: lock_timeout with retries, expand and contract steps, batched backfills, NOT VALID constraints and concurrent indexes.
14 min read