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      <dt style="clear: both; float: left; font-weight: bold; width: 8em">Author</dt>
      <dd style="margin-left: 8.5em">YUKI Hiroshi &lt;shimo****@clear*****&gt;</dd>
      <dt style="clear: both; float: left; font-weight: bold; width: 8em">Date</dt>
      <dd style="margin-left: 8.5em">2015-04-29 17:35:45 +0900 (Wed, 29 Apr 2015)</dd>
      <dt style="clear: both; float: left; font-weight: bold; width: 8em">New Revision</dt>
      <dd style="margin-left: 8.5em"><a href="https://github.com/droonga/droonga.org/commit/c7aabb2f7533255bec1062555ad14cfe9b128751">c7aabb2f7533255bec1062555ad14cfe9b128751</a></dd>
      <dt style="clear: both; float: left; font-weight: bold; width: 8em">Message</dt>
      <dd style="margin-left: 8.5em"><pre style="border: 1px solid #aaa; font-family: Consolas, Menlo, &quot;Liberation Mono&quot;, Courier, monospace; line-height: 1.2; padding: 0.5em; width: auto">Describe about native protocol</pre></dd>
      <dt style="clear: both; float: left; font-weight: bold; width: 8em">Modified files</dt>
      <dd style="margin-left: 8.5em">
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          <li><a href="https://github.com/droonga/droonga.org/commit/c7aabb2f7533255bec1062555ad14cfe9b128751#diff-0">tutorial/1.1.0/groonga/index.md</a></li>
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<pre style="border: 0; font-family: Consolas, Menlo, &quot;Liberation Mono&quot;, Courier, monospace; line-height: 1.2; margin: 0; padding: 0.5em; white-space: normal; width: auto"><span class="diff-header" style="background-color: #eaf2f5; color: #999999; display: block; white-space: pre">  Modified: tutorial/1.1.0/groonga/index.md (+42 -1)</span>
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<pre style="border: 0; font-family: Consolas, Menlo, &quot;Liberation Mono&quot;, Courier, monospace; line-height: 1.2; margin: 0; padding: 0.5em; white-space: normal; width: auto"><span class="diff-line-number-hunk-header" style="display: block; white-space: pre"><a href="https://github.com/droonga/droonga.org/commit/c7aabb2f7533255bec1062555ad14cfe9b128751#L0L197">...</a></span>
<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/droonga/droonga.org/commit/c7aabb2f7533255bec1062555ad14cfe9b128751#L0L198">198</a></span>
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<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/droonga/droonga.org/commit/c7aabb2f7533255bec1062555ad14cfe9b128751#L0L200">200</a></span>
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<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/droonga/droonga.org/commit/c7aabb2f7533255bec1062555ad14cfe9b128751#L0L203">203</a></span>
<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/droonga/droonga.org/commit/c7aabb2f7533255bec1062555ad14cfe9b128751#L0L204">204</a></span>
<span class="diff-line-number-hunk-header" style="display: block; white-space: pre"><a href="https://github.com/droonga/droonga.org/commit/c7aabb2f7533255bec1062555ad14cfe9b128751#L0L275">...</a></span>
<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/droonga/droonga.org/commit/c7aabb2f7533255bec1062555ad14cfe9b128751#L0L276">276</a></span>
<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/droonga/droonga.org/commit/c7aabb2f7533255bec1062555ad14cfe9b128751#L0L277">277</a></span>
<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/droonga/droonga.org/commit/c7aabb2f7533255bec1062555ad14cfe9b128751#L0L278">278</a></span>
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<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/droonga/droonga.org/commit/c7aabb2f7533255bec1062555ad14cfe9b128751#L0L280">280</a></span>
<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/droonga/droonga.org/commit/c7aabb2f7533255bec1062555ad14cfe9b128751#L0L281">281</a></span>
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<pre style="border: 0; font-family: Consolas, Menlo, &quot;Liberation Mono&quot;, Courier, monospace; line-height: 1.2; margin: 0; padding: 0.5em; white-space: normal; width: auto"><span class="diff-line-number-hunk-header" style="display: block; white-space: pre"><a href="https://github.com/droonga/droonga.org/commit/c7aabb2f7533255bec1062555ad14cfe9b128751#L0R197">...</a></span>
<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/droonga/droonga.org/commit/c7aabb2f7533255bec1062555ad14cfe9b128751#L0R198">198</a></span>
<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/droonga/droonga.org/commit/c7aabb2f7533255bec1062555ad14cfe9b128751#L0R199">199</a></span>
<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/droonga/droonga.org/commit/c7aabb2f7533255bec1062555ad14cfe9b128751#L0R200">200</a></span>
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<span class="diff-line-number-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre"><a href="https://github.com/droonga/droonga.org/commit/c7aabb2f7533255bec1062555ad14cfe9b128751#L0R307">307</a></span>
<span class="diff-line-number-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre"><a href="https://github.com/droonga/droonga.org/commit/c7aabb2f7533255bec1062555ad14cfe9b128751#L0R308">308</a></span>
<span class="diff-line-number-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre"><a href="https://github.com/droonga/droonga.org/commit/c7aabb2f7533255bec1062555ad14cfe9b128751#L0R309">309</a></span>
<span class="diff-line-number-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre"><a href="https://github.com/droonga/droonga.org/commit/c7aabb2f7533255bec1062555ad14cfe9b128751#L0R310">310</a></span>
<span class="diff-line-number-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre"><a href="https://github.com/droonga/droonga.org/commit/c7aabb2f7533255bec1062555ad14cfe9b128751#L0R311">311</a></span>
<span class="diff-line-number-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre"><a href="https://github.com/droonga/droonga.org/commit/c7aabb2f7533255bec1062555ad14cfe9b128751#L0R312">312</a></span>
<span class="diff-line-number-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre"><a href="https://github.com/droonga/droonga.org/commit/c7aabb2f7533255bec1062555ad14cfe9b128751#L0R313">313</a></span>
<span class="diff-line-number-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre"><a href="https://github.com/droonga/droonga.org/commit/c7aabb2f7533255bec1062555ad14cfe9b128751#L0R314">314</a></span>
<span class="diff-line-number-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre"><a href="https://github.com/droonga/droonga.org/commit/c7aabb2f7533255bec1062555ad14cfe9b128751#L0R315">315</a></span>
<span class="diff-line-number-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre"><a href="https://github.com/droonga/droonga.org/commit/c7aabb2f7533255bec1062555ad14cfe9b128751#L0R316">316</a></span>
<span class="diff-line-number-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre"><a href="https://github.com/droonga/droonga.org/commit/c7aabb2f7533255bec1062555ad14cfe9b128751#L0R317">317</a></span>
<span class="diff-line-number-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre"><a href="https://github.com/droonga/droonga.org/commit/c7aabb2f7533255bec1062555ad14cfe9b128751#L0R318">318</a></span>
<span class="diff-line-number-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre"><a href="https://github.com/droonga/droonga.org/commit/c7aabb2f7533255bec1062555ad14cfe9b128751#L0R319">319</a></span>
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<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/droonga/droonga.org/commit/c7aabb2f7533255bec1062555ad14cfe9b128751#L0R321">321</a></span>
<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/droonga/droonga.org/commit/c7aabb2f7533255bec1062555ad14cfe9b128751#L0R322">322</a></span>
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            <td class="diff-content" style="border: 1px solid #aaa">
<pre style="border: 0; font-family: Consolas, Menlo, &quot;Liberation Mono&quot;, Courier, monospace; line-height: 1.2; margin: 0; padding: 0.5em; white-space: normal; width: auto"><span class="diff-hunk-header" style="background-color: #eaf2f5; color: #999999; display: block; white-space: pre">@@ -198,7 +198,16 @@ <span class="diff-context" style="background-color: #ffffaa; color: #000000">Two nodes are configured to work together as a Droonga cluster.</span></span>
<span class="diff-not-changed" style="display: block; white-space: pre"> Let's continue to [the next step, &quot;how to use the cluster&quot;](#use).</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> </span>
<span class="diff-not-changed" style="display: block; white-space: pre"> </span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">-## Use the Droonga cluster, via HTTP {#use}</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+## Use the Droonga cluster, via HTTP (and its native protocol) {#use}</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+There are two different interfaces to communicate with a Droonga cluster: HTTP and Droonga's native protocol (same to fluentd's one).</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+ * HTTP interface is useful for Web applications.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+   If your application is based on Groonga with its HTTP interface, it can migrate to Droonga easily.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+ * The native protocol has better performance, but difficult to use a little.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+   However, there are a client library and command line utilities supporting it.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+This section's instructions are mainly based on HTTP.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> </span>
<span class="diff-not-changed" style="display: block; white-space: pre"> ### Start and stop services on each Droonga node</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> </span>
<span class="diff-hunk-header" style="background-color: #eaf2f5; color: #999999; display: block; white-space: pre">@@ -276,6 +285,38 @@ <span class="diff-context" style="background-color: #ffffaa; color: #000000">To stop services, run commands like following on each Droonga node:</span></span>
<span class="diff-not-changed" style="display: block; white-space: pre"> </span>
<span class="diff-not-changed" style="display: block; white-space: pre"> After verification, start services again, on each Droonga node.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> </span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+### Communicating with Droonga cluster via its native protocol</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+On the other hand, you can send any native message to `droonga-engine` servers by the command line utility `droonca-request`, included in the gem package `droonga-client`.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+For example, you can send a `system.status` request to a `droonga-engine` node bypassing `droonga-http-server` service, like:</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+~~~</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+$ echo '{&quot;dataset&quot;:&quot;Default&quot;,&quot;type&quot;:&quot;system.status&quot;}' | \</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+    droonga-request --host node0 --receiver-host node0</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+Elapsed time: 0.023726995</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+{</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+  &quot;inReplyTo&quot;: &quot;1430292510.4677904&quot;,</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+  &quot;statusCode&quot;: 200,</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+  &quot;type&quot;: &quot;system.status.result&quot;,</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+  &quot;body&quot;: {</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+    &quot;nodes&quot;: {</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+      &quot;node0:10031/droonga&quot;: {</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+        &quot;status&quot;: &quot;active&quot;</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+      },</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+      &quot;node1:10031/droonga&quot;: {</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+        &quot;status&quot;: &quot;active&quot;</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+      }</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+    },</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+    &quot;reporter&quot;: &quot;...&quot;</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+  }</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+}</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+~~~</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+As above, Droonga's native message is written in the JSON format.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+Because it is very different from Groonga's method, this tutorial doesn't describe details of this way, for now.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> ### Create a table, columns, and indexes</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> </span>
<span class="diff-not-changed" style="display: block; white-space: pre"> Now your Droonga cluster actually works as an HTTP server compatible to Groonga's HTTP server.</span>
</pre>
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