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Dat PHAM HOANG 2d54f3f1b9 TF-1010 [ADR] Guideline for Email's cache

2022-10-05 11:16:49 +07:00

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17. Email cache guideline

Date: 2022-10-04

Status

Accepted

Context

The logic of Email cache is complicated to follow by all developers

Decision

Brief the logic flows to easier in following the changes of cache implementation

Email Caches of each mailbox will be filled by ThreadConstants.defaultLimit items at the first time open this mailbox.
State of Email will be cached at the first time cache is filled.
Email Caches of all mailbox will be synchronized by Email/changes in the case State of Email is available in local. Only items in cache will be updated by changes, other will be ignored
After any operations (CRUD with Mailbox, Email), refreshChanges is invoked to synchronize the cache
To guarantee the single of truth, UI only display the final result which fetches from the cache, does not directly show the result come from the back-end

Consequences

Any change to ThreadRepository::getAllEmail and ThreadRepository::refreshChanges should be updated in this ADR