---
prelude: >
    Congress now supports high-availability and high-query-throughput
    deployments with load-balanced policy engines and warm-standby data-source
    drivers.
features:
  - Added support for replicated (load-balanced) policy engines for
    high-availability and high-query-throughput deployments. See HA-Overview
    and HA-Deployment documentation for more information.
  - Added support for warm-standby data-source drivers managed by Pacemaker.
    See HA-Overview and HA-Deployment documentation for more information.
upgrade:
  - Added a new database table dstabledata to persist pushed data from
    a datasource. Necessary migration scripts are included in
    congress/db/migration/