annotate mod_storage_multi/README.markdown @ 4340:7cd3b7ec59e9

mod_http_oauth2: Rudimentary support for scopes (but not really) We don't support limiting access, but this change will inform the client what permissions the created token has (e.g. is the user an admin or not). There is some work in progress on real scope support.
author Matthew Wild <mwild1@gmail.com>
date Sat, 16 Jan 2021 19:47:22 +0000
parents a7fdab9c14e2
children
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1 ---
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2 summary: Multi-backend storage module (WIP)
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3 labels:
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4 - NeedDocs
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5 - Stage-Alpha
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6 ...
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7
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8 Introduction
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9 ============
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10
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11 This module attemtps to provide a storage driver that is really multiple
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12 storage drivers. This could be used for storage error tolerance or
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13 caching of data in a faster storage driver.
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14
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15 Configuration
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16 =============
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17
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18 An example:
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19
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20 ``` {.lua}
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21 storage = "multi"
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22 storage_multi_policy = "all"
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23 storage_multi = {
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24 "memory",
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25 "internal",
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26 "sql"
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27 }
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28 ```
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29
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30 Here data would be first read from or written to [mod\_storage\_memory],
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31 then internal storage, then SQL storage. For reads, the first successful
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32 read will be used. For writes, it depends on the `storage_multi_policy`
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33 option. If set to `"all"`, then all storage backends must report success
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34 for the write to be considered successful. Other options are `"one"` and
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35 `"majority"`.