Spring Boot Transactional Pitfalls: Proxies, Propagation, Rollback
Learn why @Transactional fails silently: proxy self-invocation, default rollback rules, propagation semantics, lazy loading, and how to verify boundaries.
14 min read
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Kubernetes HPA Custom Metrics: Scaling on Real Demand Signals
Wire the Kubernetes HPA to request rate, queue depth and latency via custom and external metrics, and choose between Prometheus Adapter and KEDA.
14 min read
FastAPI Background Tasks: BackgroundTasks vs Celery vs ARQ
Choose between FastAPI BackgroundTasks, ARQ, and Celery based on durability, retries, and isolation, with idempotency, enqueue, and testing guidance.
15 min read
Circuit Breaker Pattern in Microservices: Timeouts, Retries, Limits
How cascading failures spread between services, and how to design timeouts, deadline propagation, retry budgets, bulkheads and circuit breakers together.
19 min read
Custom Nx Plugin createNodes: Infer Tasks from Your Config Files
Build a custom Nx plugin with createNodes that turns your own config files into cache-correct inferred tasks, with testing, debugging and trade-offs.
14 min read
NestJS Request Lifecycle: Guards, Interceptors, Pipes, Filters
Learn the exact order of the NestJS request lifecycle, what context each layer sees, and how to pick middleware, guards, interceptors, pipes or filters.
13 min read
gRPC Deadlines Error Handling: Status Codes and Propagation
Learn how gRPC deadlines propagate across services, how to choose and translate status codes, and how to retry safely without causing retry storms.
14 min read
Background Jobs in a Monolith: In-Process vs a Separate Queue
Compare in-process workers, a database-backed job queue and a message broker for monolith background jobs, with retries, idempotency, scheduling and scaling signals.
20 min read
Idempotency Keys in Microservices: Making Retries Safe End to End
Learn how to mint, propagate, and enforce idempotency keys across microservices so retries, redeliveries, and timeouts never cause duplicate side effects.
16 min read
Multi-Tenant Monolith Database Design: Shared Tables vs Schema per Tenant
Compare shared tables with row-level security against schema per tenant for a multi-tenant monolith: isolation, migrations, performance, lifecycle, and cost.
15 min read
How to Extract a Service from a Monolith: Picking the First Seam
Learn how to extract your first service from a monolith by choosing a clean seam, untangling data, cutting over safely, and budgeting for platform work.
13 min read
PostgreSQL EXPLAIN ANALYZE Slow Query Tuning with pg_stat_statements
Rank slow queries by total cost with pg_stat_statements, then use EXPLAIN (ANALYZE, BUFFERS) to find row misestimates and fix the real cause.
13 min read