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Expose db.SetMaxOpenConns and allow non MySQL dbs to set conn pool params (#8528) (#8618)

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* Expose db.SetMaxOpenConns and allow other dbs to set their connection params
* Add note about port exhaustion

Co-Authored-By: guillep2k <18600385+guillep2k@users.noreply.github.com>
This commit is contained in:
zeripath
2019-10-22 07:00:37 +01:00
committed by GitHub
parent bac9424a62
commit ece768ab6e
4 changed files with 25 additions and 17 deletions
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docs/content/doc/advanced/config-cheat-sheet.en-us.md
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@@ -167,8 +167,12 @@ Values containing `#` or `;` must be quoted using `` ` `` or `"""`.
- `LOG_SQL`: **true**: Log the executed SQL.
- `DB_RETRIES`: **10**: How many ORM init / DB connect attempts allowed.
- `DB_RETRY_BACKOFF`: **3s**: time.Duration to wait before trying another ORM init / DB connect attempt, if failure occured.
- `MAX_IDLE_CONNS` **0**: Max idle database connections on connnection pool, default is 0
- `CONN_MAX_LIFETIME` **3s**: Database connection max lifetime
- `MAX_OPEN_CONNS` **0**: Database maximum open connections - default is 0, meaning there is no limit.
- `MAX_IDLE_CONNS` **2**: Max idle database connections on connnection pool, default is 2 - this will be capped to `MAX_OPEN_CONNS`.
- `CONN_MAX_LIFETIME` **0 or 3s**: Sets the maximum amount of time a DB connection may be reused - default is 0, meaning there is no limit (except on MySQL where it is 3s - see #6804 & #7071).
Please see #8540 & #8273 for further discussion of the appropriate values for `MAX_OPEN_CONNS`, `MAX_IDLE_CONNS` & `CONN_MAX_LIFETIME` and their
relation to port exhaustion.
## Indexer (`indexer`)