AdditionAddict

## building-sync-systems.md

      
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                pesterhazy
                / building-sync-systems.md
            
            
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              April 30, 2024 22:46
            
              
                Building an offline realtime sync engine
              
          
    So you want to write a sync system for a web app with offline and realtime support? Good luck. You might find the following resources useful.
Overview articles


Database in a browser, a spec (Stepan Parunashvili)
What problem are we trying to solve with a sync system?


The web of tomorrow (Nikita Prokopov)


## indexeddb-problems.md

      
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                pesterhazy
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              April 19, 2024 02:40
            
              
                The pain and anguish of using IndexedDB: problems, bugs and oddities
              
          
    This gist lists challenges you run into when building offline-first applications based on IndexedDB, including open-source libraries like Firebase, pouchdb and AWS amplify (more).
Note that some of the following issues affect only Safari. Out of the major browsers, Chrome's IndexedDB implementation is the best.
Backing file on disk (WAL file) keeps growing (Safari)

When this bug occurs, every time you use the indexeddb, the WAL file grows. Garbage collection doesn't seem to be working, so after a while, you end up with gigabytes of data.
Random exceptions when working with a large number of indexeddb databases (Safari)