api-cacher

Most simple way to add caching in Promise based API in JavaScript

What is this ?

We normally query server data using XHR requests, and we use Promises for making XHR requests!

This tiny library add caching layer for Promises.

Example

function printUsers(){
  User.findAll().then(function(data){
     console.log("Users are ", data);
  })
}

Above function will print users users !

But, What if your code will call this printUsers method again and again ?

printUsers();
printUsers();
printUsers();
//3 XHR Requests !

Solution is apiCacher library !

User.findAllCached = apiCacher({
  cache: true,
  cacheHash: function() {
    return "all";
  },
  request: function() {
    return User.findAll();
  }
});
function printUsers(){
  User.findAllCached().then(function(data){
     console.log("Users are ", data);
  })
}
printUsers();
printUsers();
printUsers();
//just 1 XHR Requests !

Bonus Examples

using cacheHash you can set cache key.

User.findByIdCached = apiCacher({
  cache: true,
  cacheHash: function(reqObj) {
    return reqObj.id;
  },
  request: function(reqObj) {
    return User.findById(reqObj);
  }
});

License

MIT