Once a minute, we query the repo_embedding_jobs table to check a repo needs to be re-embedded, or if there is already an up-to-date embeddings index. At some customer sites, we've seen this query add a ton of load to the DB.

Ideas for a quick fix:

• Run this query less frequently -- we can likely check this much less often, as default minimum interval between embedding jobs is 24 hours
• Add indexes to this table

/cc @sourcegraph/search-platform