mirror of
https://github.com/vector-im/hydrogen-web.git
synced 2024-12-23 11:35:04 +01:00
18 lines
933 B
Markdown
18 lines
933 B
Markdown
|
# persistance vs model update of a room
|
||
|
|
|
||
|
|
## persist first, return update object, update model with update object
|
||
|
|
-
|
||
|
|
## update model first, return update object, persist with update object
|
||
|
|
- not all models exist at all times (timeline only when room is "open"),
|
||
|
|
so model to create timeline update object might not exist for persistence need
|
||
|
|
|
||
|
|
## persist, update, each only based on sync data (independent of each other)
|
||
|
|
- possible inconsistency between syncing and loading from storage as they are different code paths
|
||
|
|
+ storage code remains very simple and focussed
|
||
|
|
|
||
|
|
## updating model and persisting in one go
|
||
|
|
- if updating model needs to do anything async, it needs to postpone it or the txn will be closed
|
||
|
|
|
||
|
|
## persist first, read from storage to update model
|
||
|
|
+ guaranteed consistency between what is on screen and in storage
|
||
|
|
- slower as we need to reread what was just synced every time (big accounts with frequent updates)
|