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Bolter - the caching framework for node.js

In-memory cache (backed by {})

var bolter = require('bolter')
  , cache
  , f;

cache = bolter({ storage: 'memory' });
f = cache(function (x) { return x; });

f.cache.on('hit', function (x) {
  console.log('Cache hit for x ===', x);
});

f.cache.on('miss', function (x) {
  console.log('Cache miss for x ===', x);
});

f(1); // Cache miss for x === 1
f(1); // Cache hit for x === 1
f(1).then(function (value) {
    console.log('Result of f(1) is ', value);
  }).done(); // Result of f(1) is 1

Redis cache

var bolter = require('bolter')
  , cache
  , f;

cache = bolter({ storage: 'redis' });
f = cache(function (x) { return x; }, { /* options */ });

// Everything else is similar to in-memory cache!

Options

  • prefix - prefix of redis key

    default: name of cached function

    f = cache(f);
    f(1, 2); // will store value under f:1:2 key in redis
    
    g = cache(g, { prefix: 'g-prefix' });
    g(1, 2); // will store value under g-prefix:1:2 key in redis
    
  • client - custom redis client, see redis client for node

    default: bolter will try to connect to standart redis port on localhost

  • expire - key expiration timeout in seconds

    default: none

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