#postgresql

TDTim Derzhavetstimderzhavets.hashnode.dev

Building Fitness Program Adaptation Algorithms

Your users have been following the same workout plan for six weeks. Some are crushing their lifts and ready for more. Others are grinding through plateaus, accumulating fatigue without progress. A static program treats both the same way, and that's t...

6h ago11 min read

TDTim Derzhavetstimderzhavets.hashnode.dev

Exercise Selection Algorithms with Equipment Constraints

Introduction Building a fitness application that recommends exercises sounds straightforward until you encounter the complexity of real-world constraints. A user wants to build upper body strength, but they're working out at home with only dumbbells ...

6h ago14 min read

TDTim Derzhavetstimderzhavets.hashnode.dev

Building an Exercise Database: Multi-Source Data Normalization

Anyone who has tried to build a fitness application quickly discovers a frustrating reality: exercise data is scattered across dozens of sources, each with its own naming conventions, field structures, and quality standards. One API calls it "Dumbbel...

6h ago12 min read

TDTim Derzhavetstimderzhavets.hashnode.dev

ClickUp to Custom Kanban: Migration Strategies

You've been using ClickUp for project management, and it works. The boards are organized, the workflows are defined, and your team knows where to find their tasks. But then you start using Claude Code for development, and a friction emerges: context-...

6h ago16 min read

TDTim Derzhavetstimderzhavets.hashnode.dev

Building a Production-Ready Event Store in PostgreSQL: Schema Design, Projections, and Replay

Your microservice just corrupted production data. A race condition in the order processing service double-charged 847 customers, and now you're staring at a database that only knows the current state of each account. The CFO wants to know exactly whi...

6h ago23 min read

TDTim Derzhavetstimderzhavets.hashnode.dev

Building a Polyglot Persistence Layer: When One Database Isn't Enough

You've optimized your PostgreSQL queries to death, but your analytics dashboard still crawls under load. Meanwhile, your document-heavy user profiles are forcing you into EAV anti-patterns, and your cache invalidation strategy has grown so Byzantine ...

6h ago20 min read

TDTim Derzhavetstimderzhavets.hashnode.dev

Muscle Activation Data Modeling for Fitness Applications

Every fitness application faces the same fundamental challenge: helping users train effectively means understanding which muscles each exercise targets and how intensely. A user doing bench presses is not just "working chest" - they are activating pe...

6h ago11 min read

TDTim Derzhavetstimderzhavets.hashnode.dev

Building Fitness Program Adaptation Algorithms

Your users have been following the same workout plan for six weeks. Some are crushing their lifts and ready for more. Others are grinding through plateaus, accumulating fatigue without progress. A static program treats both the same way, and that's t...

6h ago11 min read

TDTim Derzhavetstimderzhavets.hashnode.dev

Exercise Selection Algorithms with Equipment Constraints

Introduction Building a fitness application that recommends exercises sounds straightforward until you encounter the complexity of real-world constraints. A user wants to build upper body strength, but they're working out at home with only dumbbells ...

6h ago14 min read

TDTim Derzhavetstimderzhavets.hashnode.dev

Building an Exercise Database: Multi-Source Data Normalization

Anyone who has tried to build a fitness application quickly discovers a frustrating reality: exercise data is scattered across dozens of sources, each with its own naming conventions, field structures, and quality standards. One API calls it "Dumbbel...

6h ago12 min read

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Building Fitness Program Adaptation Algorithms

Exercise Selection Algorithms with Equipment Constraints

Building an Exercise Database: Multi-Source Data Normalization

ClickUp to Custom Kanban: Migration Strategies

Building a Production-Ready Event Store in PostgreSQL: Schema Design, Projections, and Replay

Building a Polyglot Persistence Layer: When One Database Isn't Enough

Muscle Activation Data Modeling for Fitness Applications

Building Fitness Program Adaptation Algorithms

Exercise Selection Algorithms with Equipment Constraints

Building an Exercise Database: Multi-Source Data Normalization