#performance
3 entries: Note.
- 6 sections
Indexes: Too Few Slow Reads, Too Many Kill Writes
A missing index slows the query; too many indexes make every write expensive. Striking the right balance by measurement, not by guesswork
- 7 sections
Read/Write Splitting: Separating Read and Write Load
Before scaling up the database: moving read traffic to replicas, the traps replication lag creates, and when you actually need it
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- 6 sections
Before You Reach for Redis: The Right Cache Strategy
The questions to ask before adding a cache, why cache invalidation is hard, and the choice between TTL and consistency