tilelive-cache

I am a caching wrapper for tilelive.js. I cache both sources and data produced by their respective getTile() functions.

Usage

var tilelive = require("tilelive"),
    cache = require("tilelive-cache")(tilelive, {
      size: 10,      // 10MB cache (the default)
      sources: 6,    // cache a maximum of 6 sources (the default); you may
                     // need to change this if you're using lots of
                     // composed sources
      closeDelay: 30 // wait 30s (the default) before closing sources when
                     // they've been evicted; this should prevent drain errors in
                     // tilelive-mapnik
    });

// ...

// initializes or loads a tilelive-mapnik source
cache.load("mapnik://./stylesheet.xml", function(err, source) {
  // ...

  // generates or loads a tile from the cache
  return source.getTile(12, 1213, 1491, function(err, data, headers) {
    // ...
  });
});

To warm the cache, call load() without a callback:

cache.load("mapnik://./stylesheet.xml");