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    v8-compile-cache

    2.3.0 • Public • Published

    v8-compile-cache

    Build Status

    v8-compile-cache attaches a require hook to use V8's code cache to speed up instantiation time. The "code cache" is the work of parsing and compiling done by V8.

    The ability to tap into V8 to produce/consume this cache was introduced in Node v5.7.0.

    Usage

    1. Add the dependency:
    $ npm install --save v8-compile-cache
    1. Then, in your entry module add:
    require('v8-compile-cache');

    Requiring v8-compile-cache in Node <5.7.0 is a noop – but you need at least Node 4.0.0 to support the ES2015 syntax used by v8-compile-cache.

    Options

    Set the environment variable DISABLE_V8_COMPILE_CACHE=1 to disable the cache.

    Cache directory is defined by environment variable V8_COMPILE_CACHE_CACHE_DIR or defaults to <os.tmpdir()>/v8-compile-cache-<V8_VERSION>.

    Internals

    Cache files are suffixed .BLOB and .MAP corresponding to the entry module that required v8-compile-cache. The cache is entry module specific because it is faster to load the entire code cache into memory at once, than it is to read it from disk on a file-by-file basis.

    Benchmarks

    See https://github.com/zertosh/v8-compile-cache/tree/master/bench.

    Load Times:

    Module Without Cache With Cache
    babel-core 218ms 185ms
    yarn 153ms 113ms
    yarn (bundled) 228ms 105ms

    ^ Includes the overhead of loading the cache itself.

    Acknowledgements

    Keywords

    none

    Install

    npm i v8-compile-cache

    DownloadsWeekly Downloads

    12,603,467

    Version

    2.3.0

    License

    MIT

    Unpacked Size

    16.8 kB

    Total Files

    5

    Last publish

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