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supabase/apps/studio/styles
Joshen Lim dfd5461ef9 Opt to use connection string of read replica if available to power the table editor (#42856)
## Context

Part of dashboard scalability project

Opting to use the connection string of the project's read replica (if
available) for read queries on the database.

Trialing with the Table Editor as a first pass - changes involved will
opt to use replica connection string for `useTableRowsQuery`,
`useTableRowsCountQuery`, and `useForeignKeyConstraintsQuery`

There's definitely optimizations to be done for deciding which replica
to use - but am starting off with a rather naive logic to prioritize
replicas in the same region as the project.

## Changes involved

- We're no longer passing `connectionString` as a param into the
affected hooks, the `connectionString` is derived from within those
hooks instead
- Change is feature flagged, so things should be status quo if flag is
off (use primary database's connection string)
- Added `useConnectionStringForReadOps` hook which returns the replica's
connection string if (Otherwise defaults to primary database connection
string)
  - Feature flag is on
  - Project has a replica available

## To test

- [ ] Verify that the table editor works as expected for a project that
has read replicas (There shouldn't be any change really)
- [ ] Also just double check that updating cells in the table editor
works as well (There's no change there, we're using the primary DB's
connection string for mutation ops)
- [ ] ^ Same thing for a project that doesn't have read replicas
- [ ] ^ Same thing for local / self-host
2026-03-04 16:34:36 +08:00
..
2025-03-27 17:46:57 +08:00

Styles

When to write custom styles

Tailwind should be sufficient to cover the majority of styling needs. We typically only write custom styles here in the event where we're working with an external library and we need to override some styles (e.g Monaco, or even our own UI library).

Ideally, keep custom styling here to a minimum, use tailwind directly in the pages and components where possible, so that we have less code to maintain.

If you're writing custom styles

Group custom styles into separate stylesheets based on their context. For styles which are generic and global, we can write them in main.scss.