mperham--sidekiq/Ent-Changes.md

Sidekiq Enterprise Changelog
=======================

Please see [http://sidekiq.org/](http://sidekiq.org/) for more details and how to buy.

HEAD
-------------

- Add API to check if a unique lock is present. See [#2932] for details.
- Tune concurrent limiters to minimize thread thrashing under heavy contention. [#2944]
- Add option for tuning which Bundler groups get preloaded with `sidekiqswarm` [#3025]
```
SIDEKIQ_PRELOAD=default,production bin/sidekiqswarm ...
# Use an empty value for maximum application compatibility
SIDEKIQ_PRELOAD= bin/sidekiqswarm ...
```

1.2.1
-------------

- Multi-Process mode can now monitor the RSS memory of children and
  restart any that grow too large.  To limit children to 1GB each:
```
MAXMEM_KB=1048576 COUNT=2 bundle exec sidekiqswarm ...
```

1.2.0
-------------

- **NEW FEATURE** Multi-process mode!  Sidekiq Enterprise can now fork multiple worker
  processes, enabling significant memory savings.  See the [wiki
documentation](https://github.com/mperham/sidekiq/wiki/Ent-Multi-Process) for details.


0.7.10
-------------

- More precise gemspec dependency versioning

1.1.0
-------------

- **NEW FEATURE** Historical queue metrics, [documented in the wiki](https://github.com/mperham/sidekiq/wiki/Ent-Historical-Metrics) [#2719]

0.7.9, 1.0.2
-------------

- Window limiters can now accept arbitrary window sizes [#2686]
- Fix race condition in window limiters leading to non-stop OverLimit [#2704]
- Fix invalid overage counts when nesting concurrent limiters

1.0.1
----------

- Fix crash in periodic subsystem when a follower shuts down, thanks
  to @justinko for reporting.

1.0.0
----------

- Enterprise 1.x targets Sidekiq 4.x.
- Rewrite several features to remove Celluloid dependency.  No
  functional changes.

0.7.8
----------

- Fix `unique_for: false` [#2658]


0.7.7
----------

- Enterprise 0.x targets Sidekiq 3.x.
- Fix racy shutdown event which could lead to disappearing periodic
  jobs, requires Sidekiq >= 3.5.3.
- Add new :leader event which is fired when a process gains leadership.

0.7.6
----------

- Redesign how overrated jobs are rescheduled to avoid creating new
  jobs. [#2619]

0.7.5
----------

- Fix dynamic creation of concurrent limiters [#2617]

0.7.4
----------
- Add additional check to prevent duplicate periodic job creation
- Allow user-specified TTLs for rate limiters [#2607]
- Paginate rate limiter index page [#2606]

0.7.3
----------

- Rework `Sidekiq::Limiter` redis handling to match global redis handling.
- Allow user to customize rate limit backoff logic and handle custom
  rate limit errors.
- Fix scalability issue with Limiter index page.

0.7.2
----------

- Fix typo which prevented limiters with '0' in their names.

0.7.1
----------

- Fix issue where unique scheduled jobs can't be enqueued upon schedule
  due to the existing unique lock. [#2499]

0.7.0
----------

Initial release.