If cache is faster than database, why not store everything in cache?

📰 Dev.to · Hari

Learn why caching everything isn't a silver bullet and how to strike a balance between cache and database for optimal performance

intermediate Published 28 Mar 2026
Action Steps
  1. Evaluate your application's data access patterns to determine what can be safely cached
  2. Consider the cache invalidation strategy to ensure data consistency
  3. Calculate the memory requirements for caching large datasets
  4. Compare the performance benefits of caching against the increased complexity
  5. Implement a caching layer with a suitable eviction policy
Who Needs to Know This

Developers and DevOps teams can benefit from understanding the trade-offs between caching and database storage to optimize their application's performance

Key Insight

💡 Caching everything can lead to increased complexity, memory requirements, and data inconsistency, so it's essential to strike a balance between cache and database

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🚀 Caching isn't always the answer! Learn when to cache and when to store in a database for optimal performance 🚀

Key Takeaways

Learn why caching everything isn't a silver bullet and how to strike a balance between cache and database for optimal performance

Full Article

We should all have had this question, why not just use cache everywhere if cache is faster than a...
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