Ran Xiaolong developed a configurable TCP Keepalive feature for the apache/bookkeeper repository, targeting improved connection stability in environments with restrictive firewalls. Using Java and network programming skills, Ran introduced new keepalive parameters within the Bookie Client’s configuration, allowing users to fine-tune idle time, interval, and probe count for TCP connections. The implementation updated the PerChannelBookieClient to respect these settings, while maintaining backward compatibility by defaulting to system values when unspecified. This work addressed production reliability concerns by reducing disconnections caused by firewall idle timers, and included thorough unit testing to ensure robust integration without disrupting existing deployments.