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POArchitecture for data layer that uses both localStorage and a REST remote server
 

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    <p>Anybody has any ideas or references on how to implement a data persistence layer that uses both a localStorage and a REST remote storage:</p> <p>The data of a certain client is stored with localStorage (using an ember-data indexedDB adapter). The locally stored data is synced with the remote server (using ember-data RESTadapter). </p> <p>The server gathers all data from clients. Using <a href="http://en.wikipedia.org/wiki/Set_theory" rel="nofollow noreferrer">mathematical sets</a> notation:</p> <pre><code>Server = Client1 ∪ Client2 ∪ ... ∪ ClientN </code></pre> <p>where, in general, any record may not be unique to a certain client:</p> <pre><code>ClientX ∩ ClientY ≠ 0, ∀ X,Y ∈ [1,N] </code></pre> <p>Here are some scenarios:</p> <ul> <li><p>A client creates a record. The id of the record can't be set on the client, since it may conflict with a record stored on the server. Therefore a newly created record needs to be committed to the server -> receive the id -> create the record in localStorage.</p></li> <li><p>A record is updated on the server, and as a consequence the data in localStorage and in the server go out of sync. Only the server knows that, so the architecture needs to implement a push architecture (?)</p></li> </ul> <p>Would you use 2 stores (one for localStorage, one for REST) and sync between them, or use a hybrid indexedDB/REST adapter and write the sync code within the adapter? </p> <p>Can you see any way to avoid implementing push (Web Sockets, ...)?</p>
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    1. COThis article gives some insight: http://engineering.linkedin.com/mobile/linkedin-ipad-using-local-storage-snappy-mobile-apps
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