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We are currently investigating this issue.

Clearing the CDN cache appears to have solved the issue.

This incident has been resolved.

Starting at 14:24 PT, there was an issue with the Activity Log causing events to stop being processed. You may notice a gap starting at that time. We are slowly backfilling these events and do not expect any data loss to occur. We expect the full data log to be restored around 17:30 PT.

Backfill of the Activity Log events has completed. All events during the affected period should be present.

We are investigating an issue with delayed ingest in the EU region. SLOs and Trigger evaluations may also be delayed.

We are monitoring the situation. Events may have been delayed between 17:53 and 18:04 UTC.

This incident has been resolved.

We are investigating an issue with delayed ingest in the US and EU region. Our engineers are rolling back a recent deploy. SLOs and Trigger evaluations may also be delayed.

We have rolled back the deploy and ingest service has recovered. There has been an ingest outage from 17:55 - 18:14 UTC. We have also observed an delay for Service Maps.

Triggers, SLOs and Service Maps are recovered. We are continuing to monitoring the Ingest Service

All services have been fully recovered. Impact window: 17:55–18:17 UTC Regions affected: Primary impact in US. The EU region was affected to a much lesser degree. During this period, the following effects may have occurred: Ingest: Some data was not ingested, resulting in complete or partial data loss for events sent during the window. Triggers: Triggers may have failed to fire within the impact window. SLOs: SLI values across the affected window are skewed by the missing data and may show artificial dips or accelerated budget burn. Service Maps: Maps covering the outage window are incomplete. Services and dependencies may be under-counted, as their traces were not ingested. We apologize for the disruption. Please reach out if you have any questions about how this may have affected your data.

On June 24, we experienced approximately 30 minutes of severe data ingestion degradation in Honeycomb’s US and EU instances. During this degradation, Honeycomb rejected a significant percentage of inbound telemetry, and customers would have seen up to a half-hour gap in ingested telemetry. Additionally, during this same time window, customers would have experienced data processing degradation and service disruption within Anomaly Detection and Service Maps. A deployment containing a change to how services retrieve dataset schemas into local caches caused a cascading set of failures, resulting in failed remote cache retrievals, and subsequently, a MySQL stampede due to several services falling back to retrieving schemas from the database. This stampede resulted in significant memory utilization growth, causing some services to crash loop with out-of-memory exceptions while retrieving schemas. Customers would have seen 5xx errors from our ingestion APIs when this occurred, because ingestion services were among those that were crash looping. This also included crash looping from services responsible for Anomaly Detection and Service Maps. Right after these service crash loops began, alerts fired for the crashing services, and procedures were run to pin all services back to the last known good build before the breaking change landed. Once services were running the previous deploy’s build, the 5xx error responses from ingestion APIs returned to nominal baseline levels, and services that were crash looping recovered and resumed normal operation. The underlying issue centered on how dataset schema cache payloads and metadata were serialized to memcached for remote cache retrieval, and how memcached clients deserialize that data before writing it to a local cache. The code change contained a feature flag to toggle the serialization behavior, and backwards-compatibility safeguards for clients deserializing different schema versions from memcached. However, services’ schema deserialization prior to the feature flag flip on did not behave as intended, treating each backwards-compatible schema read as a hard error rather than as a fallback, which subsequently caused every remote schema cache read to fall through to the database. Subsequent analysis and review of the code identified the issue and we have re-deployed this change with a fix along with additional tests. Services now correctly and successfully deserialize schemas from memcached in a safe, backwards-compatible manner.

We are aware of an issue affecting Honeycomb MCP. Write tool functionality may be degraded. Read tools are unaffected.

We are aware of an issue affecting Honeycomb MCP. Write tool functionality may be degraded. Read tools are unaffected.

MCP Write Tools have been restored. MCP users may need to reconnect to see all available tools.

Beginning June 17th, enhance-related requests were failing to complete. We've since identified and deployed a fix, and enhance is now fully operational. Thank you for your patience.

We are continuing to investigate intermittent slowness and query failures affecting our Production EU Region. We will provide an update as soon as we have more information.

Querying in our Production EU Region is fully operational. We will continue to monitor for any abnormal behavior.

We have identified the root cause of the intermittent slowness and query failures affecting our Production EU Region. The issue was triggered by a large volume of dataset deletions that caused elevated database load, resulting in query instability. No data was lost during this incident. Service has been restored. A fix has been applied to help prevent recurrence.

We are currently investigating the cause of slowness and query failures in our Production EU Region.

The issue is now resolved and querying is back to fully functional.

Requests to Honeycomb's Query Data and Management APIs in the production-eu1 environment encountered increased error rates between approximately 15:35 and 22:24 UTC. Event ingestion was not affected. The issue has been resolved.

We are investigating an issue with delayed ingest in the EU region. Received events are still being stored, but there may be a delay in event retrieval in queries. SLOs and Trigger evaluations may also be delayed.

Queries should no longer be delayed. SLOs and Trigger evaluations remain impacted.

The issue has been identified and a fix is being implemented.

All services are now healthy.

We are currently investigating this issue.

This incident has been resolved.

Canvas agent cannot load honeycomb internal tools.

This incident has been resolved.

We have identified and are working to resolve an issue that is causing query results to return inconsistent results.

Impact from this issue has concluded. For a period of time (different between US and EU instances, noted below), queries spanning data older than the most recent 2 hours with certain GROUP / WHERE clauses returned inconsistent results. Data was never lost, and reruns of the same queries will show the previously missing data. US impact times: 21:50 UTC - 23:20 UTC EU impact times: 20:50 UTC - 23:20 UTC

This is an administrative update, marking the incident as Resolved. There has been no further impact since 23:20UTC on May 21 2026.

Activity log delay is rising, and is more than an hour behind due to a MySQL replica failover. Estimated recovery by 04:00 PDT.

Backfilling of the past 2h30m of data is now in progress and should complete shortly.

We believe that the activity log should now be caught up.

We are continuing to monitor for any further issues.

All activity log streams are now caught up, except for the query runs table, which should have all data since the start of the incident backfilled by 1600 PDT.

Activity Log recovered at 07:00 UTC-07:00 today (about 6.5h ago).  All streams are caught up.

This incident has been resolved.

The database failover that caused query issues earlier in the EU (https://status.honeycomb.io/incidents/n855d8kzp32y) has also had knock-on effects on our Activity Log beta feature. Due to recovery issues on the data replication flow used for this mechanism, activity log events will be missing from 12:45 UTC until 19:45 UTC, representing a 5 hour gap in events. We have identified configuration parameters that will be adjusted to reduce the likelihood of such losses in the future.

At 12:50, our main database underwent an automated failover. This failover led to issues with some of our query engine connection pools, and caused queries to fail for roughly 10 minutes before self resolving.

We discovered that links in Slack triggers are not working and have identified the cause and are in process of implementing a fix

The fix has been implemented and links on Slack triggers are functional again.

We are confident the issue is fully resolved.

Activity Log events are interrupted, starting from around 15:51UTC. Customers may experience some data lost since the beginning of the incident.

Activity Log is back to operational, and most events should be recovered.

Activity Log is experiencing a delay in processing events. We are working on remediating the issue.

Activity Log is ingesting events again. We had no loss in data.

Activity Log events may be delayed, starting from around 19:55UTC. We're actively working on remediation.

A fix has been implemented and we are monitoring recovery.

All activity log data is now live and up to date.