
Python Async HTTP Requests with aiohttp: Fetch Multiple URLs Concurrently
Quick Tip Reuse one aiohttp session, fan your requests out with asyncio.gather, and cap them with a semaphore to fetch hundreds of URLs in the time one loop would take. The Problem **The

Redis Caching Patterns: Cache-Aside, Write-Through & Cache Invalidation
- Backend
- Performance
- 07 Apr 2026
- 05 Mins read
Need to scale your backend without throwing money at servers? Start with Redis caching patterns. Most databases can handle hundreds of queries per second, but thousands? Your app slows to a crawl

PostgreSQL Query Optimization: Indexes, EXPLAIN ANALYZE & Execution Plans
- Database
- Performance
- 29 Mar 2026
- 05 Mins read
Need to optimize slow PostgreSQL queries? Use EXPLAIN ANALYZE and targeted indexing. Slow database queries kill application performance. Most developers don't know where the actual bottleneck is,

Optimizing your python code with __slots__?
- Python
- Productivity
- 16 Jul 2025
- 04 Mins read
Memory optimization with slots Understanding the problem Optimizing data models in big data workflows with slots In big data and MLOps workflows, you often work with massive