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The Practical Developer

The Libuv Thread Pool Trap: Why Node.js Async APIs Stall Under Load Postgres Covering Indexes with INCLUDE: Eliminate Heap Fetches on Read-Heavy Workloads Postgres DISTINCT ON: The Fastest Way to Get the Latest Row Per Group Postgres Transaction Isolation: The Anomalies Your App Actually Faces in Production Linux TCP Tuning for Node.js Microservices: The Kernel Settings That Stop Silent Connection Drops Under Load Postgres HOT Updates and Fillfactor: Why Not All Writes Are Created Equal Database Connection Pool Leaks: Finding the Promise That Never Returns Its Seat Linux OOM Killer in Production: Why Your Node.js Containers Die Without a Stack Trace Postgres Materialized Views: Refresh Strategies That Do Not Lock Your Dashboards API Dependency Health Checks: Why /health Is Not Enough Authorization with Zanzibar Tuples: How Google Manages Permissions and How To Build the Same Check in Node.js Postgres Advisory Locks: The 20-Character Primitive That Replaces Redis for Coordination Dead Letter Queues: The Message Queue Pattern That Saves You at 2 a.m. File Descriptor Exhaustion: The Kernel Limit That Silently Drops Node.js Connections Graceful Degradation: The Pattern That Turns Total Outages into Partial Success PostgreSQL Full-Text Search: Dropping Elasticsearch for 90% of Use Cases S3 Presigned Multipart Uploads: Stop Your API Server from Being a File Upload Bottleneck MessagePack vs JSON: The Binary Serialization Switch That Cut Our Internal RPC Overhead by 40% DNS Caching in Node.js: The Silent Cause of Production Latency Spikes Reliable Cron Jobs: The Pattern That Stops Double Runs, Missed Executions, And The 2 AM Page GraphQL Query Complexity: Stop the OOM Query Before It Reaches Your Resolver Node.js Event Loop Lag: The Hidden Metric Behind Random Latency Spikes API Request Validation with Zod: The Schema That Catches Bad Input Before It Corrupts Your Database Load Shedding in Node.js: How to Reject Traffic Before You Drown Request Hedging: Cut Tail Latency In Half Without Overprovisioning Git Bisect: The Automated Binary Search That Finds Breaking Commits in Minutes Node.js Garbage Collection Tuning: Stop Letting V8 Pause Your Event Loop Node.js Server Timeouts: The Settings That Stop Slow Clients from Holding Sockets Hostage Postgres BRIN Indexes: The Time-Series Secret That Shrinks Indexes by 99% Event Sourcing with PostgreSQL: The Pragmatic 80% Solution Node.js Cluster Mode: Scaling the Event Loop Across CPU Cores Postgres Partial Indexes: Stopping Soft Deletes from Ruining Your Query Performance Request Coalescing with the Singleflight Pattern: Stop Drowning Your Database on Every Cache Miss The Bulkhead Pattern: Why One Slow Endpoint Should Not Drown Your Whole Service Node.js AsyncLocalStorage: End-to-End Request Context Without the Propagation Hell Postgres Deadlocks: Logging the Victim, Reproducing the Race, and Fixing the Lock Order Your Node.js HTTP Client Is the Bottleneck: Connection Pool Tuning That Works Optimistic Locking in Postgres: Stop Losing Data to Race Conditions Postgres Read Replicas: Stop Serving Stale Data to Your Users Cursor Pagination: Why Offset Queries Explode at Scale and How to Fix Them Node.js Worker Threads: 60 Lines That Stop a CSV Upload from Timing Out Every Other Request Reliable Webhook Delivery: Architecture for Outbound HTTP You Can Trust Request Timeouts and Deadline Propagation: Stop the Chain of Slowness Advanced Security Practices in Node.js Graceful Shutdown in Node.js: The 40 Lines That Stop 502s During Deploys Finding Node.js Memory Leaks with Heap Snapshots Idempotency Keys in 30 Lines: Stop Your Webhook From Charging Customers Twice Backpressure In Node.js: The Fix For Slow-Motion Queue Meltdowns Retries Done Right: Jitter, Budgets, and the Stampede You Did Not See Coming The Cache Stampede: Why Your "Just Add Redis" Layer Crashes Postgres at 3 a.m. Postgres SKIP LOCKED: An 80-Line Job Queue You Can Run Without Redis Stop Doing Work Nobody Wants: AbortController in Node.js, Done Right The N+1 Query Problem: We Found 23 In One Codebase And Killed Every One I Tried 5 AI Coding Tools for a Month. Here Is What I Actually Use CI/CD From Zero to Production in 30 Minutes With GitHub Actions Node.js vs Bun vs Deno: Which Runtime Should You Pick in 2025? 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Logical Replication: Which One Solves Your Actual Problem ESLint Rules That Earn Their Keep: The Twelve I Enable On Every Project Pre-Commit Hooks That Pay For Themselves: Husky, lint-staged, And The Five Rules That Stick Zero-Downtime Database Migrations: The Six-Step Pattern That Rules Them All Circuit Breakers In Node.js: 50 Lines That Stop A Failing Dependency From Taking Down Your Service Postgres VACUUM Is Not Magic: How Your Hot Table Bloats To 80GB And How To Fix It Kubernetes Liveness And Readiness Probes: The Difference That Causes Half Your Outages Rate Limiting In Production: A Token Bucket In 30 Lines Of Redis The Outbox Pattern: How To Stop Losing Events When Postgres And Kafka Disagree Load Testing With k6: The Three Scenarios That Find Real Bugs (Not Synthetic Numbers) Postgres Row-Level Security For Multi-Tenant Apps: The Pattern That Stops You From Leaking Data Rebase vs. Merge: The Team Policy That Ends The Argument Forever OpenTelemetry in Node.js: Distributed Tracing That Actually Helps During an Incident Feature Flags That Pay Rent: The 4 Flag Types And When To Delete Each ETag, Last-Modified, and the Caching Headers Most APIs Get Wrong Connection Pooling Without the Cargo Cult: pgbouncer in 100 Lines of Config JSONB Is Not a Schema: When To Reach For It in Postgres, And When To Stop Bash Strict Mode: The Three Lines That Stop Your Deploy Script From Lying To You
Hot-Reloading Configuration in Node.js Without Downtime
The Practica · 2026-06-11 · via The Practical Developer
Your feature flag service went down at 3 a.m. and now you need to restart every Node.js pod to disable a brok…

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