fs-lazy-cache

Another file system cache for Node.

Lazy-loads files into a memory cache. Caches files on write. There's an option to not write file saves to disk and only keep in the cache. A version of scanDir is included.

Installation

npm install fs-lazy-cache --save

or

yarn add fs-lazy-cache

Usage

Check out the source/test.js file for some example usage.

readFile

Load a file from the filesystem and add a copy to the cache.

Uses fs.readFile() internally.

let fs = require('fs-lazy-cache');

fs.readFile('somefile.txt', function (err, output) {
    if (err) throw err;
    
    return output;
})

readFileSync

Load a file from the filesystem and add a copy to the cache.

Uses fs.readFileSync() internally.

let fs = require('fs-lazy-cache');

let output = fs.readFile('somefile.txt');

outputFile

Save a file to the filesystem and store a copy in the cache.

Uses 'fs-extra.outputFile` internally.

fs.outputFile('somefile.txt', 'some contents', true, 5000, function (err) {
    if (err) throw err;
});    

file The filename.

contents The file string contents.

toDisk If the file should be saved to disk or only to the cache.

timeout (Optional) Timeout in milliseconds before deleting from the cache.

callback Same callback functionality as fs-extra.outputFile or fs.writeFile

outputFileSync

Same as above but with no callback.

Uses 'fs-extra.outputFileSync` internally.

fs.outputFileSync('somefile.txt', 'some contents', false, 2000); 

scanDir

Scan the cache for files in a directory. Note this DOES NOT scan the filesystem.

let filesArray = scanDir(__dirname);

Credits

https://github.com/rjjakes

License

MIT.