Database Tuning and Optimization
This is a college project on database system tuning and query optimization.
Database Filling
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The SQL database filling scripts and NoSQL collections can be found in this GDrive folder.
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Make sure to disable foreign key checks bfore running SQL scripts :
SET FOREIGN_KEY_CHECKS=0;.
Optimization Techniques
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Schema Optimization :
- Normalization/Denormalization.
- Data types optimization.
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Memory and Cache Optimization :
- Hardware Specs.
- Stored Procedures.
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Index Optimization :
- Indexes Generation on Non-Primary Keys.
- UNION is better than OR with Indexes.
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Query Optimization :
- Unnecessary Conditions Elimination.
- UNION ALL instead of UNION.
Required Statistics
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Non-optimized SQL vs. Optimized SQL (100,000).
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Optimized SQL vs. NoSQL (100,000).
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Different Sizes of Optimized SQL (10,000 / 100,000 / 1,000,000).
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Different hardware on Optimized SQL.
Clearing Disk Cache
- To clear disk cache for database :
chmod +x clear_cache.bash ./clear_cache.bash