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annotate mod_storage_appendmap/README.markdown @ 5173:460f78654864

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mod_muc_rtbl: also filter messages This was a bit tricky because we don't want to run the JIDs through SHA256 on each message. Took a while to come up with this simple plan of just caching the SHA256 of the JIDs on the occupants. This will leave some dirt in the occupants after unloading the module, but that should be ok; once they cycle the room, the hashes will be gone. This is direly needed, otherwise, there is a tight race between the moderation activities and the actors joining the room.
author Jonas Schäfer <jonas@wielicki.name>
date Tue, 21 Feb 2023 21:37:27 +0100
parents 88474dd1af48
children
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b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
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b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
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2 labels:
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
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3 - 'Stage-Alpha'
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
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4 - 'Type-Storage'
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
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5 summary: Experimental map store optimized for small incremental changes
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
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6 ...
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
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7
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
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8 This is an experimental storage driver where changed data is appended.
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
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9 Data is simply written as `key = value` pairs to the end of the file.
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
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10 This allows changes to individual keys to be written without needing to
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
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11 write out the entire object again, but reads would grow gradually larger
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
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12 as it still needs to read old overwritten keys. This may be suitable for
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88474dd1af48 Various READMEs: s/eg/e.g.g/
Kim Alvefur <zash@zash.se>
parents: 2061
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13 e.g. rosters where individual contacts are changed at a time. In theory,
2061
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
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14 this could also allow rolling back changes.
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15
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
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16 Requires 0.10