Database Architecture & Optimization
Design scalable database systems with expert architecture, performance tuning, and optimization
Transform your data layer into a high-performance foundation with expert database architecture and optimization services. I specialize in designing scalable database systems that handle billions of records, optimizing query performance by up to 1000x, and implementing rock-solid replication and high availability strategies. Whether you're running PostgreSQL, MySQL, MongoDB, or multi-database architectures, I ensure your data layer supports your business growth without becoming a bottleneck.
My comprehensive approach includes schema design following normalization principles, index optimization with deep query analysis (EXPLAIN ANALYZE), connection pooling (PgBouncer, ProxySQL) for reduced latency, and query optimization that transforms slow queries into millisecond responses. I implement replication strategies (streaming, logical, multi-master), sharding for horizontal scalability, and disaster recovery plans that guarantee zero data loss (RPO=0) and minimal downtime (RTO<5 minutes).
Whether you need to migrate from one database to another (Oracle to PostgreSQL, MySQL to PostgreSQL), optimize an existing database with performance issues, or architect a new data layer from scratch, I deliver production-tested solutions. From ACID-compliant relational databases to NoSQL document stores and time-series databases, I select the right tool for each job and integrate them seamlessly.
Schema Design & Normalization
- Database schema design following normalization principles (3NF, BCNF)
- Entity-Relationship Diagrams (ERD) for clear data modeling
- Denormalization strategies for read-heavy workloads
- Constraint management (PK, FK, CHECK, UNIQUE) for data integrity
Query Optimization & Performance
- Slow query analysis with EXPLAIN ANALYZE for bottleneck identification
- Index optimization (B-tree, Hash, GiST, GIN) for query acceleration
- Query rewriting for better execution plans
- Vacuum and analyze automation for statistics maintenance
Replication & High Availability
- Streaming replication for real-time data synchronization
- Logical replication for selective table replication
- Multi-master replication with conflict resolution
- Automated failover with Patroni, repmgr for zero downtime
Sharding & Scalability
- Horizontal sharding strategies (hash-based, range-based, geo-based)
- Partitioning (range, list, hash) for table size management
- Vertical scaling optimization before horizontal scaling
- Read replicas for load distribution and query offloading
Connection Pooling & Resource Management
- PgBouncer / ProxySQL for connection pooling
- Memory tuning (shared_buffers, work_mem, maintenance_work_mem)
- WAL optimization for write performance
- Autovacuum tuning for background maintenance
Database Migration & Modernization
- Oracle to PostgreSQL migration with zero downtime
- MySQL to PostgreSQL migration strategies
- Database version upgrades (in-place, parallel cluster)
- Schema migration tools (Flyway, Liquibase, Alembic)
Database Technologies & Tools
Relational Databases
NoSQL & Caching
Business Impact of Database Architecture & Optimization
Optimize query performance by up to 1000x with proper indexing and tuning
Achieve 99.99% uptime with streaming replication and automated failover
Scale to billions of records with horizontal sharding and partitioning
Reduce infrastructure costs by 40% through connection pooling and caching
Migrate from Oracle/MySQL with zero downtime and data integrity
Ensure data integrity with proper schema design and constraint management