Level Up Coding
Go 1.26's Green Tea GC Cuts Backend Latency 6% for Free
Switching to Go 1.26 enables the Green Tea garbage collector by default, dropping average latency 6% and GC pauses 35% in services handling 5k-20k req/s—no code changes needed.
Tag: backend
Summaries
Level Up Coding
Two-Layer Caching Slashes Rec Latency via Scoped TTLs
Stack per-user TTL cache (5min) over global TTL cache (5min) for shared interaction matrix and similarities to avoid O(n²) rebuilds on every request, serving most hits from memory without DB touches.
AICodeKing
GPT-5.4 Best for Coding; Kimi K2.6 Tops Value vs Opus 4.7
GPT-5.4 leads in backend, debugging, planning, and reliability across tasks. Kimi K2.6 Code excels in frontend UI and offers superior speed/cost value. Opus 4.7 underperforms on messy backend work unless paired with Verdent's workflows.
Towards AI
GraphQL Fits AI Agents' Token Limits Perfectly
GraphQL's introspection, exact field selection, and types prevent token waste in AI agents, unlike REST which forces over-fetching and lacks runtime self-description.
Level Up Coding
Scale Stateless Backends by Broadcasting Client Updates
Horizontal scaling routes callbacks to replicas without client SSE/WebSocket connections, silently dropping updates—broadcast via Redis Pub/Sub so the owning replica delivers reliably.
Level Up Coding
Pure TypeScript Domains: Swap CRUD for Event Sourcing, Zero Rewrites
Use noDDDe's Decider pattern to build pure function-based aggregates decoupled from persistence—test without mocks and switch from SQL state storage to event sourcing by changing one config line.
The PrimeTime
Primeagen's Live SQL Bootcamp on boot.dev
Casey Muratori live-streams boot.dev's SQL course, building a PayPal clone hands-on from SELECT basics, while roasting GitHub outages and AI code horrors.
__oneoff__
JS Client for WooCommerce REST API CRUD Ops
Use @woocommerce/woocommerce-rest-api to GET, POST, PUT, DELETE WooCommerce data like products/orders via Axios promises; requires store URL, consumer key/secret.
__oneoff__
Secure ASGI Apps with Double Submit CSRF Middleware
Protect ASGI apps from CSRF using asgi-csrf: pip install, wrap app with CSRFMiddleware, embed scope['csrftoken']() in POST forms or x-csrftoken headers—rejects invalid POSTs with 403.
__oneoff__
Socket.IO: Reliable WebSocket Fallbacks for Realtime Apps
Socket.IO prioritizes WebSocket for low-overhead bidirectional communication, falls back to HTTP long-polling if needed, auto-reconnects on drops, and scales across servers for broadcasting to all clients.
__oneoff__
WooCommerce REST API: Merchant Setup Guide
Connect WooCommerce stores to external services by setting permalinks (not Plain), generating user-linked API keys, and installing a plugin for deprecated legacy API support.
__oneoff__
WooCommerce REST API v3: Full CRUD for E-com Stores
Integrate WooCommerce stores via WP REST API v3 for JSON-based CRUD on products, orders, customers, shipping, reports, and more—requires WC 3.5+, pretty permalinks, and OAuth keys.
__oneoff__
WordPress REST API: JSON Access to Site Content
Interact with WordPress sites via JSON endpoints to query, create, or edit posts, pages, and taxonomies from any HTTP/JSON-capable language, powering Block Editor and custom apps.