Cross-Chain Forwarder at Scale

Problem

The cross-chain forwarder was a critical revenue path handling high-value transactions across blockchains. Backend execution took 16 seconds on critical paths, creating poor user experience and limiting throughput as transaction volume grew past 2M transactions and $1B in total volume.

Approach

• Profiled and optimized the critical transaction execution path, identifying bottlenecks in indexing, validation, and cross-chain coordination.
• Built event-driven microservices with Kafka and Redis for blockchain indexing and state management.
• Improved distributed validator release processes for 40+ active validators.
• Designed for horizontal scaling under burst transaction load.

Outcome

• Critical backend transaction execution reduced from 16 seconds to under 1 second.
• Platform reliably handled 2M+ transactions and over $1B in total volume.
• Validator release cycles improved for 40+ active validators.
• Event-driven architecture enabled independent scaling of indexing and execution components.