December 2025 monthly summary: Delivered a critical HTTP connection pool stability and performance fix for oven-sh/bun, aligning Bun's http.Agent behavior with Node.js and delivering substantial reliability and throughput gains. Key improvements include corrected property handling, explicit keep-alive request/response header processing, and case-insensitive RFC 7230-compliant parsing. These changes resolved long-standing reuse issues and reduced per-request latency, leading to a ~66% improvement in subsequent request times and a 190% QPS increase, closing the gap with Node.js performance. The work was implemented via cross-language fixes in src/js/node/_http_client.ts and src/http.zig, validated through targeted tests and performance benchmarks. Overall impact: higher throughput, lower latency, and more predictable connection reuse in production workloads.