Duration: 1 hour and 36 minutes

Affected Components: aws-prod-eu-west-1-b - Integrations, aws-prod-us-east-1-a- Datasource monitoring, aws-prod-us-east-1-a - API, aws-prod-eu-west-1-b - Datasource monitoring, aws-prod-eu-west-1-a - Datasource monitoring, aws-prod-eu-west-1-a - Web application, aws-prod-eu-west-1-c - API, aws-prod-eu-west-1-c - Web application, aws-prod-eu-west-1-c - Integrations, aws-prod-eu-west-1-a - Integrations, aws-prod-us-east-1-a - Integrations, aws-prod-eu-west-1-a - API, aws-prod-eu-west-1-b - API, aws-prod-eu-west-1-b - Web application, aws-prod-us-east-1-a - Web application, aws-prod-eu-west-1-c - Datasource monitoring

Apr 29, 11:30:01 GMT+0
Identified - Maintenance is now in progress.

Apr 29, 13:05:36 GMT+0
Completed - Maintenance has completed successfully..

Apr 29, 11:30:00 GMT+0
Identified - We are planning for a scheduled database maintenance during that time. A short (\~few minutes) downtime will occur..

Duration: 30 minutes

Affected Components: aws-prod-eu-west-1-d - API, aws-prod-eu-west-1-d - Web application, aws-prod-eu-west-1-d - Datasource monitoring, aws-prod-eu-west-1-d - Integrations

Apr 27, 11:30:00 GMT+0
Identified - We are planning for a scheduled database maintenance on aws-prod-eu-west-1-d cell during that time..

Apr 27, 11:30:01 GMT+0
Identified - Maintenance is now in progress.

Apr 27, 12:00:00 GMT+0
Completed - Maintenance has completed successfully.

Duration: 1 hour and 18 minutes

Affected Components: aws-prod-us-east-1-a - Web application

Mar 16, 14:30:01 GMT+0
Identified - Some emails (such as reset password emails) are not being delivered in the us-east-1 region. Alert notification emails are not affected and are properly delivered. The cause of the incident has been identified and a fix is in progress..

Mar 16, 14:41:40 GMT+0
Monitoring - We deployed a fix and are currently monitoring the result..

Mar 16, 15:47:36 GMT+0
Resolved - This incident has been resolved..

Duration: 1 hour

Affected Components: aws-prod-eu-west-1-c - Datasource monitoring, aws-prod-eu-west-1-c - Integrations

Feb 26, 09:00:01 GMT+0
Identified - Maintenance is now in progress.

Feb 26, 10:00:00 GMT+0
Completed - Maintenance has completed successfully.

Feb 26, 09:00:00 GMT+0
Identified - A short database maintenance on aws-prod-eu-west-1-c cell is planned due to ongoing incident on this cell. Expect a few minutes of downtime on the application and some missed runs for monitors and datasource refresh..

Duration: 35 minutes

Affected Components: aws-prod-eu-west-1-c - Integrations, aws-prod-eu-west-1-c - Datasource monitoring

Feb 17, 14:44:12 GMT+0
Identified - On the aws-prod-eu-west-1-c cell, most jobs (including monitoring and catalog discovery jobs) are either not running or encountering delays. We identified the cause and deployed a fix..

Feb 17, 14:48:36 GMT+0
Monitoring - Jobs are now running as expected..

Feb 17, 15:19:25 GMT+0
Resolved - This incident has been resolved..

Duration: 10 days, 1 hour and 14 minutes

Affected Components: aws-prod-eu-west-1-c - Datasource monitoring

Feb 17, 09:00:00 GMT+0
Investigating - We’re currently experiencing an issue with the orchestration of some scheduled monitors on the eu-west-1-c cell. Some of them might no longer be running according to their configured schedules (for instance "hourly", "daily" or "weekly"). Manual runs of monitors through the UI or the API is not impacted and works as expected. Our team is currently investigating the issue. We’ll provide updates here as the situation progresses..

Feb 25, 09:48:13 GMT+0
Identified - We identified the cause of the issue, caused by a failure in the behavior of our orchestration framework that happens in some very specific situations, created by the incident that occurred on the 17th of February: <https://siffletdata-status.com/cmlqprxwm01clmg0v51e5vj9h>. The fix for this issue will be deployed in production on Thursday 26th of February. We've also clarified the impact of the incident: only one of the tenants of the cell is impacted, and only 7 scheduled monitors of this tenant are impacted (meaning they are no longer running according to their schedules). The customer associated with this tenant has already been contacted by our team..

Feb 27, 10:14:10 GMT+0
Resolved - This incident has been resolved. As previously stated, the current incident was an aftermath of the incident that occurred on the 17th of February (and that was resolved on that day). The detection of this residual impact was delayed by the low volume of impacted monitors compared with the total volume of monitors orchestrated by our platform. We've implemented corrective measures on our alerting systems to improve our detection of such events..

Feb 26, 13:25:06 GMT+0
Monitoring - We deployed a fix of the issue, and are monitoring that the 7 monitors are now running according to their schedules..

Duration: 1 hour

Affected Components: aws-prod-eu-west-1-b - Datasource monitoring, aws-prod-eu-west-1-b - API, aws-prod-eu-west-1-b - Web application

Jan 15, 09:15:00 GMT+0
Identified - A short database maintenance on aws-prod-eu-west-1-b cell is planned due to ongoing incident on this cell..

Jan 15, 09:15:01 GMT+0
Identified - Maintenance is now in progress.

Jan 15, 10:15:00 GMT+0
Completed - Maintenance has completed successfully.

Duration: 7 days, 17 hours and 44 minutes

Affected Components: aws-prod-eu-west-1-b - Integrations

Jan 14, 15:05:09 GMT+0
Identified - We identified the cause of the issue, caused by a failure in the behavior of our orchestration framework in a very specific situation created by last week database maintenance. The fix for this issue will be deployed in production on Thursday 15th of January..

Jan 15, 10:44:24 GMT+0
Resolved - This incident has been resolved..

Jan 7, 17:00:00 GMT+0
Investigating - We’re currently experiencing an issue with the orchestration of the scheduled refresh operations of Sifflet data sources. Some sources might not get refreshed automatically according to their configured schedule (for instance "hourly", "daily" or "weekly"). Manual refresh of data sources through the UI or the API is not impacted and works as expected. As a result and unless you trigger manual a refresh of your sources, your data catalog on the application might not represent the most recent state of the metadata of your data assets in your integrated platforms (for instance, the most recent tables, fields, tags, or lineage relationships might be absent). Our team is currently investigating the issue. We’ll provide updates here as the situation progresses..

Duration: 2 hours

Affected Components: aws-prod-us-east-1-a- Datasource monitoring, aws-prod-us-east-1-a - API, aws-prod-eu-west-1-c - Integrations, aws-prod-eu-west-1-a - Integrations, aws-prod-eu-west-1-b - Datasource monitoring, aws-prod-eu-west-1-a - Datasource monitoring, aws-prod-ap-southeast-1-a - Datasource monitoring, aws-prod-eu-west-1-a - Web application, aws-prod-eu-west-1-c - API, aws-prod-eu-west-1-c - Web application, aws-prod-eu-west-1-b - Integrations, aws-prod-ap-southeast-1-a - Web application, aws-prod-eu-west-1-b - Web application, aws-prod-ap-southeast-1-a - Integrations, aws-prod-us-east-1-a - Integrations, aws-prod-eu-west-1-c - Datasource monitoring, aws-prod-ap-southeast-1-a - API, aws-prod-eu-west-1-a - API, aws-prod-eu-west-1-b - API, aws-prod-us-east-1-a - Web application

Jan 7, 13:00:00 GMT+0
Identified - A short database maintenance on aws-prod-eu-west-1-a / aws-prod-eu-west-1-b / aws-prod-us-east-1-a cells is planned. Tenants on these cells may experience elevated error rates during a short time window..

Jan 7, 13:00:01 GMT+0
Identified - Maintenance is now in progress.

Jan 7, 15:00:00 GMT+0
Completed - Maintenance has completed successfully.

Duration: 1 hour

Affected Components: aws-prod-eu-west-1-c - Datasource monitoring, aws-prod-eu-west-1-c - API, aws-prod-eu-west-1-c - Web application

Dec 22, 14:00:00 GMT+0
Identified - A short database maintenance on the aws-prod-eu-west-1-c cell is planned. Tenants on this cell may experience elevated error rates during a short window (less than 5 minutes)..

Dec 22, 14:00:01 GMT+0
Identified - Maintenance is now in progress.

Dec 22, 15:00:00 GMT+0
Completed - Maintenance has completed successfully.

Affected Components: aws-prod-us-east-1-a- Datasource monitoring, aws-prod-eu-west-1-b - Datasource monitoring, aws-prod-eu-west-1-c - Datasource monitoring, aws-prod-eu-west-1-a - Datasource monitoring, aws-prod-ap-southeast-1-a - Datasource monitoring

Dec 1, 09:00:00 GMT+0
Resolved - An issue is preventing Sifflet from creating incidents..

Dec 3, 09:12:45 GMT+0
Resolved - This incident has been resolved..

Duration: 2 days, 9 hours and 59 minutes

Affected Components: aws-prod-eu-west-1-b - Datasource monitoring, aws-prod-eu-west-1-c - Datasource monitoring, aws-prod-eu-west-1-a - Datasource monitoring

Nov 1, 00:00:00 GMT+0
Investigating - We’re currently experiencing an issue with our email delivery system. As a result, monitor failure alerts and other email notifications may not be sent as expected. We’ll provide updates here as the situation progresses..

Nov 3, 08:42:58 GMT+0
Identified - We are continuing to work on a fix for this incident. We identified the root cause and have reached AWS support to restore normal email delivery as soon as possible..

Nov 3, 09:58:44 GMT+0
Resolved - This incident has been resolved. Our email sending capabilities have been fully restored following confirmation from AWS Support. All monitor failure alerts and other email notifications are now being delivered as expected..

Duration: 1 day, 3 hours and 25 minutes

Affected Components: aws-prod-us-east-1-a - Integrations, aws-prod-us-east-1-a- Datasource monitoring, aws-prod-us-east-1-a - API, aws-prod-us-east-1-a - Web application

Oct 20, 09:30:00 GMT+0
Identified - This morning AWS outage has impacted all our tenants hosted on the us-east-1 region. Impact is limited as the application remains mostly available, but integration syncs and datasource monitoring might not be running properly. The issue is currently being mitigated by AWS..

Oct 21, 12:54:30 GMT+0
Resolved - This incident has been resolved..

Duration: 30 minutes

Affected Components: aws-prod-eu-west-1-c - Integrations, aws-prod-eu-west-1-c - Web application, aws-prod-eu-west-1-c - Datasource monitoring, aws-prod-eu-west-1-c - API

Sep 9, 16:45:00 GMT+0
Identified - A short database maintenance on the aws-prod-eu-west-1-c cell is planned. Tenants on this cell may experience elevated error rates during a short window (less than 5 minutes)..

Sep 9, 17:15:00 GMT+0
Completed - Maintenance has completed successfully..

Duration: 3 days, 20 hours and 18 minutes

Affected Components: aws-prod-eu-west-1-a - Datasource monitoring, aws-prod-eu-west-1-a - API, aws-prod-eu-west-1-a - Web application, aws-prod-eu-west-1-a - Integrations

Aug 8, 12:25:00 GMT+0
Monitoring - Remediation has been successfully applied. We are closely monitoring the status of the cell and investigating its root cause to prevent it from happening again..

Aug 8, 12:10:00 GMT+0
Investigating - We're investigating reports of degraded performance across the Sifflet web applications..

Aug 8, 12:15:00 GMT+0
Identified - We are continuing to work on a fix for this incident. Remediation is being applied..

Aug 12, 08:27:31 GMT+0
Resolved - This incident has been resolved. Downtime started at 2:10pm CEST on Friday the 8th of August and was over by 2:35pm CEST on the same day, and only affected our eu-west-1-a tenants. The cause of the downtime was an unavailability of the database caused by a sudden surge in the database usage, that occurred at an unexpected speed and magnitude. Our auto-scaling and monitoring systems failed to react in time. We're improving our monitoring and auto-scaling to prevent such downtime to happen again and investigating the component that might be responsible for this unnecessary database load. .

Duration: 9 hours and 18 minutes

Affected Components: aws-prod-eu-west-1-a - Datasource monitoring, aws-prod-eu-west-1-a - Web application, aws-prod-eu-west-1-a - Integrations, aws-prod-eu-west-1-a - API

Jun 27, 07:40:21 GMT+0
Monitoring - We solved the cause of the downtime. We're monitoring the situation to ensure all services stay available..

Jun 27, 07:31:23 GMT+0
Investigating - All tenants in the eu-west-1-a cell are experiencing high error rates. We're investigating..

Jun 27, 08:38:43 GMT+0
Monitoring - We're still performing a complete assessment and postmortem for this incident, but we can share a few preliminary pieces of information. Only tenants hosted on the aws-prod-eu-west-1-a cell were affected. The incident started at 9:39 pm CEST on 2025-06-26 and was solved at 9:35 CEST on 2025-06-27\. Monitors and source ingestions scheduled during this time did not run. The web application was also unavailable. Our monitoring systems were not configured to send a page for the events associated to this incident. As a result, the downtime (outside business hours) was unusually long. We are reviewing our alerting notifications to make sure this doesn't happen again. We apologize for the impact caused by this incident. Such a long downtime is not acceptable and we'll implement measures to prevent this from occuring in the future..

Jun 27, 16:49:35 GMT+0
Resolved - This incident has been resolved. We updated our monitoring to trigger a page should this condition occurs again, and we identified the root cause of the issue. We're implemeting mitigations to prevent this incident from occuring again..

Duration: 22 days, 22 hours and 27 minutes

Affected Components: , aws-prod-eu-west-1-b - API, aws-prod-ap-southeast-1-a - API, aws-prod-us-east-1-a - API, aws-prod-eu-west-1-c - API, aws-prod-eu-west-1-a - API, API →

Jun 4, 09:11:30 GMT+0
Monitoring - While our monitoring is still reporting anomalies, these anomalies should not affect data freshness or completeness..

Jun 27, 07:38:59 GMT+0
Resolved - This incident has been resolved..

Duration: 20 days, 2 hours and 27 minutes

Affected Components: aws-prod-us-east-1-a - API, aws-prod-eu-west-1-a - API, aws-prod-eu-west-1-b - API, aws-prod-ap-southeast-1-a - API, aws-prod-eu-west-1-c - API

Feb 6, 09:00:00 GMT+0
Identified - Some data exported with the "data sharing" feature (<https://docs.siffletdata.com/docs/data-sharing>) may be incomplete. Notably, some monitor executions and datasets may be absent from the exported data. There is no impact on monitoring. However, if your company uses data sharing for reporting, then this reporting may be inacurate. All data is present in the source systems (no data loss or data integrity issue). The Sifflet API and web UI return all the data. Only data sharing is impacted. This incident is caused by an AWS RDS process not properly exporting data. We opened a support case with AWS, and are evaluating workarounds in the meantime..

Feb 10, 09:08:41 GMT+0
Monitoring - AWS support confirmed that there's an issue with the AWS service we rely on to export data from our databases. The resolution is pending actions on their side..

Feb 20, 10:58:10 GMT+0
Monitoring - AWS support is still investigating the issue. We're implementing mitigation measures in the meantime..

Feb 26, 11:26:44 GMT+0
Resolved - We migrated from the AWS tool we were using affected by the issue. This incident is now resolved..

Duration: 7 minutes

Affected Components: aws-prod-eu-west-1-a - Web application, aws-prod-eu-west-1-a - Integrations, aws-prod-eu-west-1-a - API, aws-prod-eu-west-1-a - Datasource monitoring

Jan 7, 20:07:08 GMT+0
Completed - The maintenance is complete..

Jan 7, 20:00:00 GMT+0
Identified - We're going to perform a database maintenance to improve application performance on the eu-west-1-a cell. During this maintenance, there may be elevated error rates during a short period (estimated to less than 5 minutes) on the web UI, API, monitors and integrations..

Jan 7, 20:00:01 GMT+0
Identified - Maintenance is now in progress.

Duration: 12 hours and 54 minutes

Affected Components: aws-prod-eu-west-1-a - Web application, aws-prod-eu-west-1-a - Integrations, aws-prod-eu-west-1-a - API, aws-prod-eu-west-1-a - Datasource monitoring

Oct 2, 11:41:14 GMT+0
Resolved - This incident has been resolved..

Oct 1, 22:46:46 GMT+0
Investigating - Monitors and sources may not correctly run for tenants on the eu-west-1-a-cell due to a database connectivity issue. We're investigating..

Oct 2, 00:04:36 GMT+0
Monitoring - We're monitoring the situation..

Duration: 3 hours and 23 minutes

Affected Components: aws-prod-us-east-1-a - Web application

Sep 26, 17:36:19 GMT+0
Identified - Our hosting provider, AWS, is experiencing a partial outage in the us-east-1 region. We implemented mitigating measures, but some downtime may still occur on tenants in this region..

Sep 26, 18:44:04 GMT+0
Monitoring - We're no longer observing any impact on our customers. As the AWS outage is not marked as resolved, we're keeping this incident open for now..

Sep 26, 20:59:47 GMT+0
Resolved - The AWS outage is now marked as resolved and we are no longer observing any issue for our customers in the us-east-1 region..

Duration: 2 hours and 44 minutes

Affected Components: aws-prod-ap-southeast-1-a - Datasource monitoring, aws-prod-eu-west-1-b - Datasource monitoring, aws-prod-us-east-1-a- Datasource monitoring, aws-prod-eu-west-1-a - Datasource monitoring

Sep 4, 14:00:00 GMT+0
Identified - Some monitors may fail with Technical error. We have identified the issue and are working on a fix for this incident..

Sep 4, 15:24:04 GMT+0
Monitoring - A fix has been implemented and is being deployed..

Sep 4, 16:44:04 GMT+0
Resolved - This incident has been resolved..

Duration: 2 hours and 18 minutes

Affected Components: aws-prod-us-east-1-a - Integrations, aws-prod-eu-west-1-b - Integrations, aws-prod-eu-west-1-b - Web application, aws-prod-eu-west-1-a - Web application, aws-prod-eu-west-1-a - Integrations, aws-prod-us-east-1-a - API, aws-prod-eu-west-1-a - API, aws-prod-eu-west-1-b - API, aws-prod-ap-southeast-1-a - API, aws-prod-ap-southeast-1-a - Datasource monitoring, aws-prod-eu-west-1-b - Datasource monitoring, aws-prod-us-east-1-a - Web application, aws-prod-ap-southeast-1-a - Integrations, aws-prod-us-east-1-a- Datasource monitoring, aws-prod-eu-west-1-a - Datasource monitoring, aws-prod-ap-southeast-1-a - Web application

Aug 14, 14:16:49 GMT+0
Investigating - We are currently investigating this incident..

Aug 14, 16:35:12 GMT+0
Resolved - * We detected lineage discrepancies for the Snowflake Enterprise integration * A fix is currently being deployed * If you notice missing lineage, please rerun the source * If the issues persist after rerunning the source, please reach out to us.

Duration: 9 minutes

Affected Components: aws-prod-eu-west-1-b - Web application

Jul 3, 11:50:00 GMT+0
Identified - The web UI and API of all tenants on eu-west-1-b is unavailable..

Jul 3, 11:59:00 GMT+0
Resolved - This incident was caused by insufficient cluster capacity and is now resolved..

Duration: 52 minutes

Affected Components: aws-prod-eu-west-1-b - Web application, aws-prod-eu-west-1-a - Web application, aws-prod-us-east-1-a - Web application, aws-prod-ap-southeast-1-a - Web application

Feb 6, 16:22:29 GMT+0
Resolved - This incident has been resolved..

Feb 6, 15:30:00 GMT+0
Identified - We are aware of technical errors when going to the Business Glossary section of the Sifflet platform. We have identified the issue and are working on a fix for this incident..

Duration: 7 hours and 50 minutes

Affected Components: aws-prod-us-east-1-a - Integrations, aws-prod-eu-west-1-b - Integrations, aws-prod-us-east-1-a- Datasource monitoring, aws-prod-eu-west-1-a - Integrations, aws-prod-ap-southeast-1-a - Datasource monitoring, aws-prod-eu-west-1-b - Datasource monitoring, aws-prod-ap-southeast-1-a - Integrations, aws-prod-eu-west-1-a - Datasource monitoring

Dec 8, 16:51:25 GMT+0
Resolved - This incident has been resolved..

Dec 8, 09:01:08 GMT+0
Investigating - Monitors and metatadata ingestion jobs are experiencing delays. Some monitors may not be run in a timely manner. We're investigating this issue. (a previous version of this message mentioned only the eu-west-1-a cell).

Dec 8, 09:42:22 GMT+0
Investigating - Monitors are now running as usual. Some metadata ingestion jobs may still be delayed for a few customers..

Dec 8, 11:44:14 GMT+0
Monitoring - We implemented a fix and are currently monitoring the result..

Duration: 19 minutes

Affected Components: aws-prod-ap-southeast-1-a - Web application, aws-prod-eu-west-1-b - Web application, aws-prod-eu-west-1-a - Web application, aws-prod-us-east-1-a - Web application

Oct 30, 13:37:13 GMT+0
Monitoring - New users (whatever the role) can be created but when logging in, they are instantly logged out if they do not have the "All" domain. If they have the "All domain", the log in works normally.

Oct 30, 13:56:04 GMT+0
Resolved - This incident has been resolved..