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Relevant Search: With Applications for Solr and Elasticsearch

For more in depth reading about search, ranking and generally everything you could ever want to know about how lucene, elasticsearch or solr work under the hood I highly suggest this book. Easily one of the most interesting technical books I have read in a long time. If you are tasked with solving search relevance problems even if not in Solr or Elasticsearch it should be your first reference. Amazon Affiliate Link
https://bitbucket.org/Naked_Yoshi/sq_kanban
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295<li class="toctree-l2"><a class="reference internal" href="../general/routing.html">URI Routing</a></li>
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302<li class="toctree-l2"><a class="reference internal" href="../general/alternative_php.html">Alternate PHP Syntax for View Files</a></li>
303<li class="toctree-l2"><a class="reference internal" href="../general/security.html">Security</a></li>
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310<li class="toctree-l2"><a class="reference internal" href="../libraries/benchmark.html">Benchmarking Class</a></li>
311<li class="toctree-l2"><a class="reference internal" href="../libraries/caching.html">Caching Driver</a></li>
312<li class="toctree-l2"><a class="reference internal" href="../libraries/calendar.html">Calendaring Class</a></li>
313<li class="toctree-l2"><a class="reference internal" href="../libraries/cart.html">Shopping Cart Class</a></li>
314<li class="toctree-l2"><a class="reference internal" href="../libraries/config.html">Config Class</a></li>
315<li class="toctree-l2"><a class="reference internal" href="../libraries/email.html">Email Class</a></li>
316<li class="toctree-l2"><a class="reference internal" href="../libraries/encrypt.html">Encrypt Class</a></li>
317<li class="toctree-l2"><a class="reference internal" href="../libraries/encryption.html">Encryption Library</a></li>
318<li class="toctree-l2"><a class="reference internal" href="../libraries/file_uploading.html">File Uploading Class</a></li>
319<li class="toctree-l2"><a class="reference internal" href="../libraries/form_validation.html">Form Validation</a></li>
320<li class="toctree-l2"><a class="reference internal" href="../libraries/ftp.html">FTP Class</a></li>
321<li class="toctree-l2"><a class="reference internal" href="../libraries/image_lib.html">Image Manipulation Class</a></li>
322<li class="toctree-l2"><a class="reference internal" href="../libraries/input.html">Input Class</a></li>
323<li class="toctree-l2"><a class="reference internal" href="../libraries/javascript.html">Javascript Class</a></li>
324<li class="toctree-l2"><a class="reference internal" href="../libraries/language.html">Language Class</a></li>
325<li class="toctree-l2"><a class="reference internal" href="../libraries/loader.html">Loader Class</a></li>
326<li class="toctree-l2"><a class="reference internal" href="../libraries/migration.html">Migrations Class</a></li>
327<li class="toctree-l2"><a class="reference internal" href="../libraries/output.html">Output Class</a></li>
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350<li class="toctree-l2"><a class="reference internal" href="../database/helpers.html">Query Helper Functions</a></li>
351<li class="toctree-l2"><a class="reference internal" href="../database/query_builder.html">Query Builder Class</a></li>
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357<li class="toctree-l2"><a class="reference internal" href="../database/utilities.html">Database Utilities Class</a></li>
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365<li class="toctree-l2"><a class="reference internal" href="../helpers/captcha_helper.html">CAPTCHA Helper</a></li>
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427  <div class="section" id="upgrading-from-1-4-0-to-1-4-1">
428<h1>Upgrading from 1.4.0 to 1.4.1<a class="headerlink" href="#upgrading-from-1-4-0-to-1-4-1" title="Permalink to this headline"></a></h1>
429<div class="admonition note">
430<p class="first admonition-title">Note</p>
431<p class="last">The instructions on this page assume you are running version
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434<p>Before performing an update you should take your site offline by
435replacing the index.php file with a static one.</p>
436<div class="section" id="step-1-update-your-codeigniter-files">
437<h2>Step 1: Update your CodeIgniter files<a class="headerlink" href="#step-1-update-your-codeigniter-files" title="Permalink to this headline"></a></h2>
438<p>Replace the following directories in your “system” folder with the new
439versions:</p>
440<div class="admonition note">
441<p class="first admonition-title">Note</p>
442<p class="last">If you have any custom developed files in these folders please
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444</div>
445<ul class="simple">
446<li>codeigniter</li>
447<li>drivers</li>
448<li>helpers</li>
449<li>libraries</li>
450</ul>
451</div>
452<div class="section" id="step-2-update-your-config-php-file">
453<h2>Step 2: Update your config.php file<a class="headerlink" href="#step-2-update-your-config-php-file" title="Permalink to this headline"></a></h2>
454<p>Open your application/config/config.php file and add this new item:</p>
455<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="cm">/*</span>
456<span class="cm">|--------------------------------------------------------------------------</span>
457<span class="cm">| Output Compression</span>
458<span class="cm">|--------------------------------------------------------------------------</span>
459<span class="cm">|</span>
460<span class="cm">| Enables Gzip output compression for faster page loads.  When enabled,</span>
461<span class="cm">| the output class will test whether your server supports Gzip.</span>
462<span class="cm">| Even if it does, however, not all browsers support compression</span>
463<span class="cm">| so enable only if you are reasonably sure your visitors can handle it.</span>
464<span class="cm">|</span>
465<span class="cm">| VERY IMPORTANT:  If you are getting a blank page when compression is enabled it</span>
466<span class="cm">| means you are prematurely outputting something to your browser. It could</span>
467<span class="cm">| even be a line of whitespace at the end of one of your scripts.  For</span>
468<span class="cm">| compression to work, nothing can be sent before the output buffer is called</span>
469<span class="cm">| by the output class.  Do not &quot;echo&quot; any values with compression enabled.</span>
470<span class="cm">|</span>
471<span class="cm">*/</span>
472<span class="nv">$config</span><span class="p">[</span><span class="s1">&#39;compress_output&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="k">FALSE</span><span class="p">;</span>
473</pre></div>
474</div>
475</div>
476<div class="section" id="step-3-rename-an-autoload-item">
477<h2>Step 3: Rename an Autoload Item<a class="headerlink" href="#step-3-rename-an-autoload-item" title="Permalink to this headline"></a></h2>
478<p>Open the following file: application/config/autoload.php</p>
479<p>Find this array item:</p>
480<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$autoload</span><span class="p">[</span><span class="s1">&#39;core&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="k">array</span><span class="p">();</span>
481</pre></div>
482</div>
483<p>And rename it to this:</p>
484<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$autoload</span><span class="p">[</span><span class="s1">&#39;libraries&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="k">array</span><span class="p">();</span>
485</pre></div>
486</div>
487<p>This change was made to improve clarity since some users were not sure
488that their own libraries could be auto-loaded.</p>
489</div>
490<div class="section" id="step-4-update-your-user-guide">
491<h2>Step 4: Update your user guide<a class="headerlink" href="#step-4-update-your-user-guide" title="Permalink to this headline"></a></h2>
492<p>Please also replace your local copy of the user guide with the new
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