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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 | 1x 1x 1x 1x 1x 1x 1x 1x | /* This module defines several types of cache classes to use in other
* modules.
* The interface, that all types use, is kept synchronous driven by current
* usage patterns, but will need to be revisited in case usage patterns
* suggest we need asynchronous caches.
*/
/**
* In memory cache implementation
*
* @class MemoryCache
*/
function MemoryCache() {
this._cache = {};
}
/**
* Retrieve a cached value from a key
* @memberof MemoryCache
* @instance
* @param {string} key
* @return {Mixed}
*/
MemoryCache.prototype.get = function ( key ) {
return this._cache[ key ];
};
/**
* Cache a value by key
* @memberof MemoryCache
* @instance
* @param {string} key
* @param {Mixed} value
*/
MemoryCache.prototype.set = function ( key, value ) {
this._cache[ key ] = value;
};
/**
* Null object cache implementation
*
* @class NoCache
*/
function NoCache() { }
/**
* NoOp
* @memberof NoCache
* @instance
*/
NoCache.prototype.get = function () { };
/**
* NoOp
* @memberof NoCache
* @instance
*/
NoCache.prototype.set = function () { };
module.exports = {
MemoryCache: MemoryCache,
NoCache: NoCache
};
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