Best practice for angular service

Question

I have a simple question about best practices.

A service loads once at load time.

Let's say there is a method called getUser in the service called user. I have to call getUser in several controllers.

The GET request will happen twice right? Is there a good practice to check whether the data has already been fetched to avoid this second call?

I wondered the same about here is some helpful info Angular Best Practices — Dalorzo
– Dalorzo, Commented May 17, 2014 at 22:41

ms87 · Accepted Answer · 2014-02-09 17:09:03Z

1

Yes, the call gets executed twice. You can use angular's built in $http cache option, or you could use an existing module like angular-cache, or other libraries such as Breeze or Amplify. You can also try handling it yourself, probably the worst option.

answered Feb 9, 2014 at 17:09

ms87

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2 Comments

jamiltz Over a year ago

Thanks! But sometimes the data changes and caching is not the best solution. In this example bit.ly/1o7f1fk, you see that if this.busy is true it doesn't make subsequent calls. Do you think it's a good practice?

ms87 Over a year ago

@jamiltz , that busy flag is to check whether a $http call is already in progress, if it is then no more data is retrieved. not sure how that relates to your original question, but in this case i think it's being done since multiple scroll events could be firing at the same time.

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