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<h1 class="page-title">Source: cache.js</h1>
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<pre class="prettyprint source linenums"><code>
"use strict";
var LRUCache = require('./lru');
/**
* Api cache
*/
function ApiCache(limit) {
this.lru = new LRUCache(limit);
}
ApiCache.prototype = {
get: function(key, cb) {
var maybeEntry = this.lru.get(key);
if(maybeEntry && !this.isExpired(key)) {
return cb(null, maybeEntry.data);
}
return cb();
},
set: function(key, value, ttl, cb) {
this.lru.remove(key);
this.lru.put(key, {
data: value,
expiredIn: ttl ? (Date.now() + (ttl * 1000)) : 0
});
return cb();
},
isExpired: function(key) {
var entry = this.lru.get(key);
if(entry) {
return entry.expiredIn !== 0 && entry.expiredIn < Date.now();
} else {
return false;
}
},
remove: function(key, cb) {
this.lru.remove(key);
return cb();
},
clear: function(cb) {
this.lru.removeAll();
return cb();
}
};
module.exports = ApiCache;
</code></pre>
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