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<meta http-equiv="content-type" content="text/html; charset=utf-8" />
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<title>node v0.4 announcement</title>
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</head>
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<body>
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<h2>Second Stable Branch of Node released</h2>
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<p>
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<a
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href="https://github.com/ry/node/wiki/Migrating-from-v0.2-to-v0.3">Wiki
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page detailing API changes between v0.4 and v0.2</a>
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<p>
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Major changes since v0.2:
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<ul>
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<li> Major overhaul of TLS/SSL system. Previously the binding to
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OpenSSL was heavily interwoven into the socket code. This binding was
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reworked to present each connection as a pair of "streams" instead: a
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duplex encrypted stream and a duplex cleartext stream. The encrypted
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stream is piped to a raw TCP socket using the general purpose
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<code>Stream.prototype.pipe()</code> method. Functionality was
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enhanced and API simplified.
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<li>Simpler HTTP client API with connection pools.
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<li> Cheaper <code>Buffer</code> allocation. Node uses
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<code>Buffer</code> objects in many places - it was noticed that they
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were relatively slow to allocate and difficult to garbage collect. The
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implementation changed to use pure javascript objects instead of
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an <code>ObjectWrap</code> which improved performance.
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<li> With a good amount of experience now, some modifications to the
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module loading system were made to better support package managers.
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In particular, NPM was forced to resort to deep symlinks and "shim"
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modules to work around missing features in <code>require()</code>. The main
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changes are:
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<ol>
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<li><code>require()</code> calls realpath. That is,
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it resolves symbolic links. This allows symlinked modules to make
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relative requires.
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<li><code>require()</code> now has a primitive understanding of
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<code>package.json</code>. It looks for the <code>main</code>
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script. This allows <code>require()</code> to work on package
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directories directly.
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<li>A specially named directory, <code>node_modules/</code>, is
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searched in the current directory for any modules. This will
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hopefully encourage programmers to bundle modules rather than
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rely on a global namespace.
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</ol>
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Read more about these features in <a
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href="https://github.com/ry/node/blob/01a864a29d64119054401784cd9255c3a813bdbc/doc/api/modules.markdown">the
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module documentation</a>.
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<li> A half-complete but good start a native windows build with MinGW
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is underway by Bert Builder. Build instructions can be found <a
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href="https://github.com/ry/node/wiki/Building-node.js-on-mingw">on
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the wiki</a>.
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<li> Node upgraded to the latest version of V8, <code>v3.1.2</code>.
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This includes much work including V8's new compilation infrastructure
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and a GDB plugin on Linux.
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Read <a
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href="https://github.com/ry/node/blob/583f2e599962f2664dbaafa0ae98a8d6c1242441/deps/v8/ChangeLog">the
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full V8 ChangeLog</a>.
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<li>A new built-in client for V8's debugger was added to Node. It is
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still very primitive but usable for simple task. There is a <a
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href="http://vimeo.com/19465332">small introduction video</a> and
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some <a
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href="https://github.com/ry/node/blob/01a864a29d64119054401784cd9255c3a813bdbc/doc/api/debugger.markdown">documentation</a>.
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<li>An <code>os</code> module was added by Brian White which exposes
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a lot of basic but useful system information: <code>os.cpus(),
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os.freemem(), os.totalmem(), os.loadavg()</code>
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<li> And, of course, many of bug fixes. See the
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<a
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href="https://github.com/ry/node/blob/01a864a29d64119054401784cd9255c3a813bdbc/ChangeLog">full
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changelog</a>.
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</ul>
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</body>
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</html>
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