Angular-data: data store and caching for Angular.js

&quot;Angular-data is very optimistic when it comes to caching. If you do DS.find(&#x27;user&#x27;, 5) angular-data will first look for that user in the data store. If that user is already in the data store then the promise returned by DS.find(&#x27;user&#x27;, 5) will immediately resolve with the user. If no user exists then (if using the http adapter) a GET request will be made, and the user returned by the server will be injected into the data store.&quot;<p>I couldn&#x27;t find anything in the docs about invalidation. Is anybody aware of how to force invalidation of an object&#x2F;collection?

This looks interesting, but I&#x27;m not sure whether it&#x27;s worth tying into a complex project using angular. I have found angular already has a large learning curve for new developers, and adding another layer with its own syntax on top of it adds some complexity that I&#x27;m not necessarily convinced that is good in that situation.<p>It looks alright though in terms of what it offers on first inspection though. It does solve some problems that I have found myself having to solve in a similar manner with homebrewed code &amp; structure.

So excited to try this out. An Angular specific smart model layer is something I&#x27;ve been wanting to contribute to the community for a while. Thanks for doing much of the hard work!

This is superb work.<p>Just one question, does it have the feature to add offline custom methods to the model e.g. I want to add instance calculateAge() for each User ? I couldn&#x27;t find it in the guides.<p>Angular-RestMod provides it &gt; <a href="https://github.com/platanus/angular-restmod#custom-methods" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;platanus&#x2F;angular-restmod#custom-methods</a><p>(basically we use node on the server and many times we just want to reuse the same server side methods on the client)

From building <a href="http://platform.qbix.com/features/streams" rel="nofollow">http:&#x2F;&#x2F;platform.qbix.com&#x2F;features&#x2F;streams</a> I know that there are a lot of challenges here. Caching, throttling and batching requests is of course really useful. My biggest question is how do you implement:<p><pre><code> * multi-user access * realtime updates to connected clients, and * offline editing and sync? </code></pre> When multiple users access a resource, you have to consider things like consistency issues (making sure all users see the same changes applied in the same order). Also other stuff would be nice like access control (perhaps integrated with the publishing user&#x27;s address book) as well as subscriptions notifications when something changes.<p>Does anyone know of a library that implements that? It took me a couple years to get everything right in my own library.

&quot;Before writing angular-data I used to create fleets of services for my various resources, each performing data management and communicating with a persistence layer.&quot;<p>Can someone give me an example of this? I just use $http and populte the $scope models in callbacks so I don&#x27;t really recognize the problem.

Hey pseudobry, thanks for the hard work first of all. I started using the 2.x branch on a large project and it saved me soooo much time and code over what I was trying to write around localStorage caching and expiration while trying to learn Angular at the same time.<p>I tried following the advice to upgrade to 3.x when it appeared on the API docs, but it broke my app completely which, after spending 5 minutes reading the 3.x branch&#x27;s docs made complete sense - you&#x27;re going for something much larger here.<p>I haven&#x27;t personally played with Ember yet, but this seems like it might be inspired by Ember Data? Is that right? From what I hear, that&#x27;s one of the many thing that Ember has gotten really right.<p>Thanks again!

This looks great! I wrote something similar but Angular-data looks more polished. One of the problems I was trying to solve was synchronizing the same piece of data in multiple places in the client app after the server had validated the data. To do this, I broadcast an event on the rootscope in the http callback. <a href="https://github.com/robbyronk/angular-model-sync/blob/master/src/modelSync.js#L87" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;robbyronk&#x2F;angular-model-sync&#x2F;blob&#x2F;master&#x2F;...</a>

Why does this has to be an angular library ? there&#x27;s no need for that.<p>You could provide a generic js library with a way to opt-in angularjs,that way,your data access layer isnt tied to a presentation framework.<p>Can I use this lib with Backbone or React ? why this fixation on making everything depend on angular ? like jQuery in the past ? are we destined to repeat the same mistakes over and over again in the client js world ?

This is great. I&#x27;ve written more application-specific angular data stores than I&#x27;d care to admit at this point. From what I understand, this is something that Angular 2.0 will handle better, which was enough for me to justify being too lazy to write a generic library. Thanks for doing the grunt work!

I&#x27;ve built something similar recently however also solved client&#x2F;server synchronisation. You make me want to clean it up and put it on Github. The only difference is that the backend API is HATEOAS.

ELI5 why I&#x27;d use this in a regular project using say Rails and angular?

Great work, this exactly what I&#x27;ve been looking for. I&#x27;d resigned myself to writing it from scratch - so I really appreciate your efforts on this. Will try it out right now.

One minor request: if you could add syntax highlighting to the Guide and API, it would be amazing. Otherwise, nice work!

Anyone know why these high point submissions aren&#x27;t on the front page? Is Hacker News ghosting&#x2F;flagging these posts for any specific reason? Sorry to ramble a bit off topic.