Goals

• Improving performance of single Tephra Transaction Server
• Make Tephra Transaction server scale horizontally
• Make Tephra Transaction server Highly Available with Isolation
• Improve operational aspects of Transaction Server
• Scale the ability of system to run 1000s of Workflows

Areas of Focus

• Efficient Management of Invalid List
• Single Tephra Manager performance improvement
• Scaling and Isolating Tephra Manager 

High Level Requirements

Invalid List Pruning

• Automatic pruning of invalid transaction list for Major compaction
• Pruning the list during striped compactions

Performance Improvement

• Reducing the lock granularity during conflict detection
• Supporting read-only transactions
• Improving group commit efficiency
• Support for Hierarchical conflict detection
• Support for transmitting only latest snapshot of Invalid list

Scaling

Technical Breakdown

P&S-001 : XYZ