Mercurial > prosody-modules
view mod_storage_multi/README.markdown @ 4818:d66162e850cd
mod_export_skeletons: Generate ids based on log2 of the original length
author | Kim Alvefur <zash@zash.se> |
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date | Fri, 10 Dec 2021 00:14:12 +0100 |
parents | a7fdab9c14e2 |
children |
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--- summary: Multi-backend storage module (WIP) labels: - NeedDocs - Stage-Alpha ... Introduction ============ This module attemtps to provide a storage driver that is really multiple storage drivers. This could be used for storage error tolerance or caching of data in a faster storage driver. Configuration ============= An example: ``` {.lua} storage = "multi" storage_multi_policy = "all" storage_multi = { "memory", "internal", "sql" } ``` Here data would be first read from or written to [mod\_storage\_memory], then internal storage, then SQL storage. For reads, the first successful read will be used. For writes, it depends on the `storage_multi_policy` option. If set to `"all"`, then all storage backends must report success for the write to be considered successful. Other options are `"one"` and `"majority"`.