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| Cache.remember = function (key, lifetime, callback) { | |
| return Promise.try(() => { | |
| return memcached.getAsync(key); | |
| }).then((value) => { | |
| if (value !== undefined) { | |
| console.log('exists'); | |
| return value; | |
| } else { | |
| return Promise.try(() => { | |
| if (typeof callback === "function") { | |
| return callback() | |
| } else { | |
| throw new Error('callback undefined or not a function') | |
| } | |
| }).then((value) => { | |
| console.log('does not exists'); | |
| return memcached.setAsync(key, value, lifetime) | |
| }).then(() => { | |
| return memcached.getAsync(key); | |
| }) | |
| } | |
| }) | |
| }; | |
| //Calling | |
| cache.remember('key', 600, function() { | |
| return Promise.resolve('value2'); | |
| }).then((val) => { | |
| console.log('set: ', val); | |
| }) |
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