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<html class="no-js" lang="en">
<head>
<meta charset="utf-8"/>
<meta content="width=device-width,initial-scale=1" name="viewport"/>
<meta content="Ready-to-use and customizable users management for FastAPI" name="description"/>
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<meta content="mkdocs-1.2.3, mkdocs-material-8.1.4" name="generator"/>
<title>Redis - FastAPI Users</title>
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<h1 id="redis">Redis<a class="headerlink" href="#redis" title="Permanent link"></a></h1>
<p><a href="https://redis.io/">Redis</a> is an ultra-fast key-store database. As such, it's a good candidate for token management. In this strategy, a token is generated and associated with the user id. in the database. On each request, we try to retrieve this token from Redis to get the corresponding user id.</p>
<h2 id="configuration">Configuration<a class="headerlink" href="#configuration" title="Permanent link"></a></h2>
<div class="highlight"><pre><span></span><code><span class="kn">import</span> <span class="nn">aioredis</span>
<span class="kn">from</span> <span class="nn">fastapi_users.authentication</span> <span class="kn">import</span> <span class="n">RedisStrategy</span>
<span class="n">redis</span> <span class="o">=</span> <span class="n">aioredis</span><span class="o">.</span><span class="n">from_url</span><span class="p">(</span><span class="s2">"redis://localhost:6379"</span><span class="p">,</span> <span class="n">decode_responses</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">get_redis_strategy</span><span class="p">()</span> <span class="o">-&gt;</span> <span class="n">RedisStrategy</span><span class="p">:</span>
<span class="k">return</span> <span class="n">RedisStrategy</span><span class="p">(</span><span class="n">redis</span><span class="p">,</span> <span class="n">lifetime_seconds</span><span class="o">=</span><span class="mi">3600</span><span class="p">)</span>
</code></pre></div>
<p>As you can see, instantiation is quite simple. It accepts the following arguments:</p>
<ul>
<li><code>redis</code> (<code>aioredis.Redis</code>): An instance of <code>aioredis.Redis</code>. Note that the <code>decode_responses</code> flag set to <code>True</code> is necessary.</li>
<li><code>lifetime_seconds</code> (<code>Optional[int]</code>): The lifetime of the token in seconds. Defaults to <code>None</code>, which means the token doesn't expire.</li>
</ul>
<div class="admonition tip">
<p class="admonition-title">Why it's inside a function?</p>
<p>To allow strategies to be instantiated dynamically with other dependencies, they have to be provided as a callable to the authentication backend.</p>
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<h2 id="logout">Logout<a class="headerlink" href="#logout" title="Permanent link"></a></h2>
<p>On logout, this strategy will delete the token from the Redis store.</p>
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