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| author | GitLab Bot <gitlab-bot@gitlab.com> | 2021-08-09 12:22:41 +0300 |
|---|---|---|
| committer | GitLab Bot <gitlab-bot@gitlab.com> | 2021-08-09 12:22:41 +0300 |
| commit | 65688a509249eb3be8ea4687d3fe6d1432a47392 (patch) | |
| tree | dffc9c087dc2eda02e4656d5a0b16b5d7051e69f /doc/development/migration_style_guide.md | |
| parent | 4b8939db3d80469826a62f1409b921f96dac2498 (diff) | |
Add latest changes from gitlab-org/gitlab@master
Diffstat (limited to 'doc/development/migration_style_guide.md')
| -rw-r--r-- | doc/development/migration_style_guide.md | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/doc/development/migration_style_guide.md b/doc/development/migration_style_guide.md index 9beda84242d..bbaa6527e84 100644 --- a/doc/development/migration_style_guide.md +++ b/doc/development/migration_style_guide.md @@ -1145,3 +1145,7 @@ Note that the metrics linked here are GitLab-internal only: - [Size](https://thanos.gitlab.net/graph?g0.range_input=2h&g0.max_source_resolution=0s&g0.expr=topk(500%2C%20max%20by%20(relname)%20(pg_total_relation_size_bytes%7Benvironment%3D%22gprd%22%7D))&g0.tab=1) is greater than 10 GB Any table which has some high read operation compared to current [high-traffic tables](https://gitlab.com/gitlab-org/gitlab/-/blob/master/rubocop/rubocop-migrations.yml#L4) might be a good candidate. + +As a general rule, we discourage adding columns to high-traffic tables that are purely for +analytics or reporting of GitLab.com. This can have negative performance impacts for all +self-managed instances without providing direct feature value to them. |