Odyssey 1.5.1 released

Posted on 2026-07-14 by Yandex
Related Open Source

We are excited to announce a new release of the Odyssey — advanced multi-threaded connection pooler for PostgreSQL and Apache Cloudberry.

A lot of new small features have been implemented, alongside extended protocol support refactoring - many violations fixed, and overall performance of pipelining improved.

New features:

  • simple shared pools support
  • pool_pin_on_listen option for transaction pooling
  • improvements of balancing
  • cpu_affinity support
  • build with aws-lc support
  • SSLKEYLOGFILE support
  • support for queue time metrics: avg_wait_time / total_wait_time
  • poll server on attach for transparent failed backends closing
  • NOTICE with queue time via pool_notice_after_waiting_ms option
  • server_drop_on_cached_plan_error option
  • improvements of prometheus metrics exporter

Bug fixes

  • recheck pool size after server creation
  • better cancel support: wait for PG to close the cancel-connection and fix race
  • auth_query fixes
  • correct Close support in Extended protocol
  • DEALLOCATE ALL support
  • correct COPY support in extended protocol

More on pages:

We are already preparing the 1.5.2 with even more features and fixes, stay tuned! :)