Performance OptimizationAPIs Slowing Down After Deployment: Improving JVM Cold Start Problem by 85%November 18, 2025Money Disappeared? Transitioning Account Balance Verification Batch from Tasklet to Chunk & PartitioningDecember 24, 2024External API Performance Improvement: Reducing Response Time from 5100ms to 57ms with Look-aside CacheDecember 16, 2024