* Perform migration to delete any entries with `deleted` set, and
subsequently drop columns `deleted` and `deleted_at`.
* Remove `deleted` and `deleted_at` references.
Closes#2146
Label membership is now stored in the label_membership table. This is
done in preparation for adding "manual" labels, as previously label
membership was associated directly with label query executions.
Label queries are now all executed at the same time, rather than on
separate intervals. This simplifies the calculation of which distributed
queries need to be run when a host checks in.
This change optimizes live queries by pushing the computation of query
targets to the creation time of the query, and efficiently caching the
targets in Redis. This results in a huge performance improvement at both
steady-state, and when running live queries.
- Live queries are stored using a bitfield in Redis, and takes
advantage of bitfield operations to be extremely efficient.
- Only run Redis live query test when REDIS_TEST is set in environment
- Ensure that live queries are only sent to hosts when there is a client
listening for results. Addresses an existing issue in Fleet along with
appropriate cleanup for the refactored live query backend.
Closes issue #1390
There were quite a few places where UPDATES could fail silently because we weren't checking target rows where actually found where we expect them to be. In order to address this problem clientFoundRows was set in the sql driver configuration and checks for UPDATES were added to determine if matched rows were found where we expect them to be.
