Mercurial > prosody-modules
annotate mod_storage_multi/README.markdown @ 4895:2542fd80cd15
mod_turn_external: Fix type of config option (thanks mirux)
There was a separate boolean option to enable TLS before, but it was
merged with the port number option and it seems the typed API interface
got confused.
Backport of trunk rev aa7a8aa64d3f
| author | Kim Alvefur <zash@zash.se> |
|---|---|
| date | Tue, 15 Feb 2022 21:51:52 +0100 |
| parents | a7fdab9c14e2 |
| children |
| rev | line source |
|---|---|
| 1886 | 1 --- |
| 2 summary: Multi-backend storage module (WIP) | |
| 3 labels: | |
| 4 - NeedDocs | |
|
1887
a7fdab9c14e2
mod_storage_multi: Put in Alpha stage
Kim Alvefur <zash@zash.se>
parents:
1886
diff
changeset
|
5 - Stage-Alpha |
| 1886 | 6 ... |
| 7 | |
| 8 Introduction | |
| 9 ============ | |
| 10 | |
| 11 This module attemtps to provide a storage driver that is really multiple | |
| 12 storage drivers. This could be used for storage error tolerance or | |
| 13 caching of data in a faster storage driver. | |
| 14 | |
| 15 Configuration | |
| 16 ============= | |
| 17 | |
| 18 An example: | |
| 19 | |
| 20 ``` {.lua} | |
| 21 storage = "multi" | |
| 22 storage_multi_policy = "all" | |
| 23 storage_multi = { | |
| 24 "memory", | |
| 25 "internal", | |
| 26 "sql" | |
| 27 } | |
| 28 ``` | |
| 29 | |
| 30 Here data would be first read from or written to [mod\_storage\_memory], | |
| 31 then internal storage, then SQL storage. For reads, the first successful | |
| 32 read will be used. For writes, it depends on the `storage_multi_policy` | |
| 33 option. If set to `"all"`, then all storage backends must report success | |
| 34 for the write to be considered successful. Other options are `"one"` and | |
| 35 `"majority"`. |