Resolves#33254
This can be reproduced locally by running the following "high load"
test:
Run 500 hosts using osquery-perf:
```
go run ./cmd/osquery-perf --enroll_secret ... \
--host_count 500 \
--server_url https://localhost:8080 \
--live_query_fail_prob 0.0 \
--live_query_no_results_prob 0.0 \
--orbit_prob 0.0 \
--http_message_signature_prob 0.0
```
Run `stress_test_live_queries.sh`:
```
#!/bin/bash
while true; do
curl -v -k -X POST -H "Authorization: Bearer $TEST_TOKEN" https://localhost:8080/api/latest/fleet/queries/$SAVED_QUERY_ID/run -d '{"host_ids": [<500 comma-separated host ids>]}'
done
```
Use "Redis Insight" or the like and you will start to see
`livequery:{$CAMPAIGN_ID}` keys with `No limit` (which is the bug):
<img width="1380" height="227" alt="Screenshot 2025-10-07 at 3 10 26 PM"
src="https://github.com/user-attachments/assets/30434348-3217-40c4-8ebc-bab5ceb4daa9"
/>
- [X] Changes file added for user-visible changes in `changes/`,
`orbit/changes/` or `ee/fleetd-chrome/changes`.
## Testing
- [x] Added/updated automated tests
- [x] QA'd all new/changed functionality manually
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
- Bug Fixes
- Prevent lingering Redis keys for live queries by ensuring keys are
cleaned up and not recreated when completing/canceling non-existent
queries.
- Improves resource usage and avoids stale state in live query
processing.
- Tests
- Added tests verifying proper retrieval/completion behavior and that no
Redis key is created for non-existent live queries.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
---------
Co-authored-by: Ian Littman <iansltx@gmail.com>
#16331
Doc updates in a separate PR:
https://github.com/fleetdm/fleet/pull/17214
# Checklist for submitter
- [x] Changes file added for user-visible changes in `changes/` or
`orbit/changes/`.
See [Changes
files](https://fleetdm.com/docs/contributing/committing-changes#changes-files)
for more information.
- [x] Input data is properly validated, `SELECT *` is avoided, SQL
injection is prevented (using placeholders for values in statements)
- [x] Added/updated tests
- [x] Manual QA for all new/changed functionality (smoke-tested locally
with osquery-perf simulating 100 hosts, ran a live query, a saved live
query, stopped naturally and stopped before the end, and again via
fleetctl)
---------
Co-authored-by: Victor Lyuboslavsky <victor@fleetdm.com>
Co-authored-by: Victor Lyuboslavsky <victor.lyuboslavsky@gmail.com>
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.
