همفکران فناوری شریف
1Introduction
As data grows, sub-second queries become multi-second.
2Discussion
Indexes turn full scans into direct lookups; index columns used in filters, joins and sorting, but avoid excess indexes.
Use EXPLAIN, avoid SELECT *, fix ORM N+1 problems and paginate.
3Conclusion
Offload heavy reporting to read replicas to protect operational services.
Sources
همفکران فناوری شریفThis article summarises the official sources cited, prepared by the Hamfekran Fanavari Sharif team for finance leaders.
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