Caching the Right Data: What to Cache and What Not To

Caching only speeds a site up when you cache what is actually stable. Cache the wrong things and you do the opposite — stale data that breaks accuracy and costs you sales.

What we usually cache

• SEO blocks and content descriptions.
• Categories and catalog structure.
• Static interface elements.

What needs its own strategy

• Stock levels and prices.
• Personalized recommendations.
• Delivery and real-time availability.

A practical approach

1. Split data by how stable it is and its freshness SLA.
2. Assign a different TTL to each layer.
3. Use warming and invalidation, not an "eternal" cache.
4. Log misses and degradations.

The takeaway

Caching is not magic, it's discipline. The sharper the rules, the faster the site and the fewer the errors.

Want a read on your caching strategy? Write to us: https://webgoodpeople.com/en/contact