Backend
Replication Lag: The Hidden Cost of Read Replicas
Why read replicas introduce stale reads, how replication lag breaks consistency assumptions, and practical patterns to handle it safely.
·4 min read
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Backend
APIs & server logic · 57 articles · Page 1 of 5
Backend
Why SQLite Deserves a Place in Your Backend Stack
Not just for mobile apps: with WAL mode and the right replication strategy, SQLite runs production workloads with less operational overhead than Postgres.
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Backend
HTTP/3 and QUIC: What Backend Engineers Should Know
HTTP/3 replaces TCP with QUIC over UDP, eliminating head-of-line blocking at the transport layer — here's what actually changes for your services.
·4 min read
Backend
Idempotent Background Jobs: Retries, Locks, Exactly-Once
Exactly-once processing does not exist in distributed systems — here is how to design background jobs that survive retries, crashes and duplicate deliveries.
·5 min read
Backend
Materialized Views in Postgres: Trading Freshness for Speed
How to use materialized views to speed up expensive aggregations in Postgres without silently serving stale data to your users.
·5 min read
Backend
Idempotency Keys in Practice: Making Retries Safe
How to design and implement idempotency keys so retried requests never double-charge, double-send, or double-create resources.
·5 min read
Backend
Soft Deletes: The Feature That Costs More Than It Saves
Soft deletes look like a simple safety net, but they silently corrupt your schema, poison your queries, and break your constraints — here's what to use instead.
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Backend
Request Coalescing: Stopping the Thundering Herd
When a cache entry expires under load, dozens of requests race to rebuild it — inflight deduplication collapses that stampede into one upstream call.
·4 min read
Backend
Full-Text Search in Postgres, Without Elasticsearch
Postgres has a powerful built-in full-text search engine using tsvector, tsquery, and GIN indexes — no Elasticsearch cluster required for most applications.
·4 min read
Backend
Streaming Large Datasets in Node.js with Backpressure
Stop loading entire result sets into memory: how Node.js streams and async generators let you process millions of records without blowing the heap.
·4 min read
Backend
Distributed Locks: Coordinating Work Across Multiple Nodes
Stop racing conditions in distributed systems: a practical guide to implementing distributed locks with Redis and PostgreSQL advisory locks in Node.js.
·5 min read
Backend
Type-Safe Event Emitters in TypeScript
Replace Node's stringly-typed EventEmitter with a generic typed alternative that catches event name typos and payload mismatches at compile time.
·4 min read