PERF-001: Database Optimization and Indexing

[raviyelisetty]

Description:

Optimize database performance through strategic indexing, query optimization, and connection management.

Optimization Areas:

Query Performance

• Slow query identification and optimization
• Index strategy for frequently queried columns
• Database query plan analysis
• N+1 query problem resolution

Connection Management

• Connection pooling optimization
• Connection leak detection
• Read replica configuration
• Database load balancing

Data Architecture

• Table partitioning for large datasets
• Archive strategy for old data
• Database normalization review
• Foreign key constraint optimization

Index Strategy Examples

sql
-- Assessment search optimization
CREATE INDEX idx_assessments_search ON assessments 
USING GIN(to_tsvector('english', title || ' ' || description));

-- User lookup optimization
CREATE INDEX idx_users_email_active ON users(email, is_active) 
WHERE is_active = true;

-- Assessment filtering
CREATE INDEX idx_assessments_created_by_status ON assessments(created_by, status);

-- Performance monitoring
CREATE INDEX idx_audit_logs_timestamp ON audit_logs(timestamp DESC);

Monitoring Implementation:

• Query performance tracking
• Index usage analytics
• Connection pool monitoring
• Database resource utilization

Acceptance Criteria:

• Query performance improved by 50%
• Database index strategy implemented
• Connection pooling optimized
• Slow query monitoring established
• Database performance baseline
• Query optimization documentation
• Performance regression testing

Estimated Effort: 12-16 hours