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Diffstat (limited to 'doc/development/sql.md')
| -rw-r--r-- | doc/development/sql.md | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/doc/development/sql.md b/doc/development/sql.md index 8726c1331e8..a98645cfcae 100644 --- a/doc/development/sql.md +++ b/doc/development/sql.md @@ -313,9 +313,9 @@ Project.from("(#{union.to_sql}) projects") ## Ordering by Creation Date -When ordering records based on the time they were created you can simply order +When ordering records based on the time they were created, you can order by the `id` column instead of ordering by `created_at`. Because IDs are always -unique and incremented in the order that rows are created this will produce the +unique and incremented in the order that rows are created, doing so will produce the exact same results. This also means there's no need to add an index on `created_at` to ensure consistent performance as `id` is already indexed by default. @@ -367,3 +367,12 @@ retries if it were to fail because of an To be able to use this method, make sure the model you want to use this on inherits from `ApplicationRecord`. + +## Monitor SQL queries in production + +GitLab team members can monitor slow or canceled queries on GitLab.com +using the PostgreSQL logs, which are indexed in Elasticsearch and +searchable using Kibana. + +See [the runbook](https://gitlab.com/gitlab-com/runbooks/-/blob/master/docs/patroni/pg_collect_query_data.md#searching-postgresql-logs-with-kibanaelasticsearch) +for more details. |