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markdown"><header><h1>Caching</h1></header> |
| <p>Superset uses <a href="https://flask-caching.readthedocs.io/" target="_blank" rel="noopener noreferrer">Flask-Caching</a> for caching purposes. |
| Flask-Caching supports various caching backends, including Redis (recommended), Memcached, |
| SimpleCache (in-memory), or the local filesystem. |
| <a href="https://flask-caching.readthedocs.io/en/latest/#custom-cache-backends" target="_blank" rel="noopener noreferrer">Custom cache backends</a> |
| are also supported.</p> |
| <p>Caching can be configured by providing dictionaries in |
| <code>superset_config.py</code> that comply with <a href="https://flask-caching.readthedocs.io/en/latest/#configuring-flask-caching" target="_blank" rel="noopener noreferrer">the Flask-Caching config specifications</a>.</p> |
| <p>The following cache configurations can be customized in this way:</p> |
| <ul> |
| <li>Dashboard filter state (required): <code>FILTER_STATE_CACHE_CONFIG</code>.</li> |
| <li>Explore chart form data (required): <code>EXPLORE_FORM_DATA_CACHE_CONFIG</code></li> |
| <li>Metadata cache (optional): <code>CACHE_CONFIG</code></li> |
| <li>Charting data queried from datasets (optional): <code>DATA_CACHE_CONFIG</code></li> |
| </ul> |
| <p>For example, to configure the filter state cache using Redis:</p> |
| <div class="language-python codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#9CDCFE;--prism-background-color:#1E1E1E"><div class="codeBlockContent_QJqH"><pre tabindex="0" class="prism-code language-python codeBlock_bY9V thin-scrollbar" style="color:#9CDCFE;background-color:#1E1E1E"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#9CDCFE"><span class="token plain">FILTER_STATE_CACHE_CONFIG </span><span class="token operator" style="color:rgb(212, 212, 212)">=</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(212, 212, 212)">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain"> </span><span class="token string" style="color:rgb(206, 145, 120)">'CACHE_TYPE'</span><span class="token punctuation" style="color:rgb(212, 212, 212)">:</span><span class="token plain"> </span><span class="token string" style="color:rgb(206, 145, 120)">'RedisCache'</span><span class="token punctuation" style="color:rgb(212, 212, 212)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain"> </span><span class="token string" style="color:rgb(206, 145, 120)">'CACHE_DEFAULT_TIMEOUT'</span><span class="token punctuation" style="color:rgb(212, 212, 212)">:</span><span class="token plain"> </span><span class="token number" style="color:rgb(181, 206, 168)">86400</span><span class="token punctuation" style="color:rgb(212, 212, 212)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain"> </span><span class="token string" style="color:rgb(206, 145, 120)">'CACHE_KEY_PREFIX'</span><span class="token punctuation" style="color:rgb(212, 212, 212)">:</span><span class="token plain"> </span><span class="token string" style="color:rgb(206, 145, 120)">'superset_filter_cache'</span><span class="token punctuation" style="color:rgb(212, 212, 212)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain"> </span><span class="token string" style="color:rgb(206, 145, 120)">'CACHE_REDIS_URL'</span><span class="token punctuation" style="color:rgb(212, 212, 212)">:</span><span class="token plain"> </span><span class="token string" style="color:rgb(206, 145, 120)">'redis://localhost:6379/0'</span><span class="token plain"></span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain"></span><span class="token punctuation" style="color:rgb(212, 212, 212)">}</span><br></span></code></pre></div></div> |
| <h2 class="anchor anchorWithStickyNavbar_LWe7" id="dependencies">Dependencies<a href="#dependencies" class="hash-link" aria-label="Direct link to Dependencies" title="Direct link to Dependencies"></a></h2> |
| <p>In order to use dedicated cache stores, additional python libraries must be installed</p> |
| <ul> |
| <li>For Redis: we recommend the <a href="https://pypi.python.org/pypi/redis" target="_blank" rel="noopener noreferrer">redis</a> Python package</li> |
| <li>Memcached: we recommend using <a href="https://pypi.org/project/pylibmc/" target="_blank" rel="noopener noreferrer">pylibmc</a> client library as |
| <code>python-memcached</code> does not handle storing binary data correctly.</li> |
| </ul> |
| <p>These libraries can be installed using pip.</p> |
| <h2 class="anchor anchorWithStickyNavbar_LWe7" id="fallback-metastore-cache">Fallback Metastore Cache<a href="#fallback-metastore-cache" class="hash-link" aria-label="Direct link to Fallback Metastore Cache" title="Direct link to Fallback Metastore Cache"></a></h2> |
| <p>Note, that some form of Filter State and Explore caching are required. If either of these caches |
| are undefined, Superset falls back to using a built-in cache that stores data in the metadata |
| database. While it is recommended to use a dedicated cache, the built-in cache can also be used |
| to cache other data.</p> |
| <p>For example, to use the built-in cache to store chart data, use the following config:</p> |
| <div class="language-python codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#9CDCFE;--prism-background-color:#1E1E1E"><div class="codeBlockContent_QJqH"><pre tabindex="0" class="prism-code language-python codeBlock_bY9V thin-scrollbar" style="color:#9CDCFE;background-color:#1E1E1E"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#9CDCFE"><span class="token plain">DATA_CACHE_CONFIG </span><span class="token operator" style="color:rgb(212, 212, 212)">=</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(212, 212, 212)">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain"> </span><span class="token string" style="color:rgb(206, 145, 120)">"CACHE_TYPE"</span><span class="token punctuation" style="color:rgb(212, 212, 212)">:</span><span class="token plain"> </span><span class="token string" style="color:rgb(206, 145, 120)">"SupersetMetastoreCache"</span><span class="token punctuation" style="color:rgb(212, 212, 212)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain"> </span><span class="token string" style="color:rgb(206, 145, 120)">"CACHE_KEY_PREFIX"</span><span class="token punctuation" style="color:rgb(212, 212, 212)">:</span><span class="token plain"> </span><span class="token string" style="color:rgb(206, 145, 120)">"superset_results"</span><span class="token punctuation" style="color:rgb(212, 212, 212)">,</span><span class="token plain"> </span><span class="token comment" style="color:rgb(106, 153, 85)"># make sure this string is unique to avoid collisions</span><span class="token plain"></span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain"> </span><span class="token string" style="color:rgb(206, 145, 120)">"CACHE_DEFAULT_TIMEOUT"</span><span class="token punctuation" style="color:rgb(212, 212, 212)">:</span><span class="token plain"> </span><span class="token number" style="color:rgb(181, 206, 168)">86400</span><span class="token punctuation" style="color:rgb(212, 212, 212)">,</span><span class="token plain"> </span><span class="token comment" style="color:rgb(106, 153, 85)"># 60 seconds * 60 minutes * 24 hours</span><span class="token plain"></span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain"></span><span class="token punctuation" style="color:rgb(212, 212, 212)">}</span><br></span></code></pre></div></div> |
| <h2 class="anchor anchorWithStickyNavbar_LWe7" id="chart-cache-timeout">Chart Cache Timeout<a href="#chart-cache-timeout" class="hash-link" aria-label="Direct link to Chart Cache Timeout" title="Direct link to Chart Cache Timeout"></a></h2> |
| <p>The cache timeout for charts may be overridden by the settings for an individual chart, dataset, or |
| database. Each of these configurations will be checked in order before falling back to the default |
| value defined in <code>DATA_CACHE_CONFIG</code>.</p> |
| <p>Note, that by setting the cache timeout to <code>-1</code>, caching for charting data can be disabled, either |
| per chart, dataset or database, or by default if set in <code>DATA_CACHE_CONFIG</code>.</p> |
| <h2 class="anchor anchorWithStickyNavbar_LWe7" id="sql-lab-query-results">SQL Lab Query Results<a href="#sql-lab-query-results" class="hash-link" aria-label="Direct link to SQL Lab Query Results" title="Direct link to SQL Lab Query Results"></a></h2> |
| <p>Caching for SQL Lab query results is used when async queries are enabled and is configured using |
| <code>RESULTS_BACKEND</code>.</p> |
| <p>Note that this configuration does not use a flask-caching dictionary for its configuration, but |
| instead requires a cachelib object.</p> |
| <p>See <a href="/docs/configuration/async-queries-celery">Async Queries via Celery</a> for details.</p> |
| <h2 class="anchor anchorWithStickyNavbar_LWe7" id="caching-thumbnails">Caching Thumbnails<a href="#caching-thumbnails" class="hash-link" aria-label="Direct link to Caching Thumbnails" title="Direct link to Caching Thumbnails"></a></h2> |
| <p>This is an optional feature that can be turned on by activating its <a href="/docs/configuration/configuring-superset#feature-flags">feature flag</a> on config:</p> |
| <div class="language-text codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#9CDCFE;--prism-background-color:#1E1E1E"><div class="codeBlockContent_QJqH"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar" style="color:#9CDCFE;background-color:#1E1E1E"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#9CDCFE"><span class="token plain">FEATURE_FLAGS = {</span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain"> "THUMBNAILS": True,</span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain"> "THUMBNAILS_SQLA_LISTENERS": True,</span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain">}</span><br></span></code></pre></div></div> |
| <p>By default thumbnails are rendered per user, and will fall back to the Selenium user for anonymous users. |
| To always render thumbnails as a fixed user (<code>admin</code> in this example), use the following configuration:</p> |
| <div class="language-python codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#9CDCFE;--prism-background-color:#1E1E1E"><div class="codeBlockContent_QJqH"><pre tabindex="0" class="prism-code language-python codeBlock_bY9V thin-scrollbar" style="color:#9CDCFE;background-color:#1E1E1E"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#9CDCFE"><span class="token keyword" style="color:rgb(86, 156, 214)">from</span><span class="token plain"> superset</span><span class="token punctuation" style="color:rgb(212, 212, 212)">.</span><span class="token plain">tasks</span><span class="token punctuation" style="color:rgb(212, 212, 212)">.</span><span class="token plain">types </span><span class="token keyword" style="color:rgb(86, 156, 214)">import</span><span class="token plain"> FixedExecutor</span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain">THUMBNAIL_EXECUTORS </span><span class="token operator" style="color:rgb(212, 212, 212)">=</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(212, 212, 212)">[</span><span class="token plain">FixedExecutor</span><span class="token punctuation" style="color:rgb(212, 212, 212)">(</span><span class="token string" style="color:rgb(206, 145, 120)">"admin"</span><span class="token punctuation" style="color:rgb(212, 212, 212)">)</span><span class="token punctuation" style="color:rgb(212, 212, 212)">]</span><br></span></code></pre></div></div> |
| <p>For this feature you will need a cache system and celery workers. All thumbnails are stored on cache |
| and are processed asynchronously by the workers.</p> |
| <p>An example config where images are stored on S3 could be:</p> |
| <div class="language-python codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#9CDCFE;--prism-background-color:#1E1E1E"><div class="codeBlockContent_QJqH"><pre tabindex="0" class="prism-code language-python codeBlock_bY9V thin-scrollbar" style="color:#9CDCFE;background-color:#1E1E1E"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#9CDCFE"><span class="token keyword" style="color:rgb(86, 156, 214)">from</span><span class="token plain"> flask </span><span class="token keyword" style="color:rgb(86, 156, 214)">import</span><span class="token plain"> Flask</span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain"></span><span class="token keyword" style="color:rgb(86, 156, 214)">from</span><span class="token plain"> s3cache</span><span class="token punctuation" style="color:rgb(212, 212, 212)">.</span><span class="token plain">s3cache </span><span class="token keyword" style="color:rgb(86, 156, 214)">import</span><span class="token plain"> S3Cache</span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain"></span><span class="token punctuation" style="color:rgb(212, 212, 212)">.</span><span class="token punctuation" style="color:rgb(212, 212, 212)">.</span><span class="token punctuation" style="color:rgb(212, 212, 212)">.</span><span class="token plain"></span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain"></span><span class="token keyword" style="color:rgb(86, 156, 214)">class</span><span class="token plain"> </span><span class="token class-name" style="color:rgb(78, 201, 176)">CeleryConfig</span><span class="token punctuation" style="color:rgb(212, 212, 212)">(</span><span class="token builtin" style="color:rgb(86, 156, 214)">object</span><span class="token punctuation" style="color:rgb(212, 212, 212)">)</span><span class="token punctuation" style="color:rgb(212, 212, 212)">:</span><span class="token plain"></span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain"> broker_url </span><span class="token operator" style="color:rgb(212, 212, 212)">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(206, 145, 120)">"redis://localhost:6379/0"</span><span class="token plain"></span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain"> imports </span><span class="token operator" style="color:rgb(212, 212, 212)">=</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(212, 212, 212)">(</span><span class="token plain"></span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain"> </span><span class="token string" style="color:rgb(206, 145, 120)">"superset.sql_lab"</span><span class="token punctuation" style="color:rgb(212, 212, 212)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain"> </span><span class="token string" style="color:rgb(206, 145, 120)">"superset.tasks.thumbnails"</span><span class="token punctuation" style="color:rgb(212, 212, 212)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain"> </span><span class="token punctuation" style="color:rgb(212, 212, 212)">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain"> result_backend </span><span class="token operator" style="color:rgb(212, 212, 212)">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(206, 145, 120)">"redis://localhost:6379/0"</span><span class="token plain"></span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain"> worker_prefetch_multiplier </span><span class="token operator" style="color:rgb(212, 212, 212)">=</span><span class="token plain"> </span><span class="token number" style="color:rgb(181, 206, 168)">10</span><span class="token plain"></span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain"> task_acks_late </span><span class="token operator" style="color:rgb(212, 212, 212)">=</span><span class="token plain"> </span><span class="token boolean">True</span><span class="token plain"></span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain">CELERY_CONFIG </span><span class="token operator" style="color:rgb(212, 212, 212)">=</span><span class="token plain"> CeleryConfig</span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain"></span><span class="token keyword" style="color:rgb(86, 156, 214)">def</span><span class="token plain"> </span><span class="token function" style="color:rgb(220, 220, 170)">init_thumbnail_cache</span><span class="token punctuation" style="color:rgb(212, 212, 212)">(</span><span class="token plain">app</span><span class="token punctuation" style="color:rgb(212, 212, 212)">:</span><span class="token plain"> Flask</span><span class="token punctuation" style="color:rgb(212, 212, 212)">)</span><span class="token plain"> </span><span class="token operator" style="color:rgb(212, 212, 212)">-</span><span class="token operator" style="color:rgb(212, 212, 212)">></span><span class="token plain"> S3Cache</span><span class="token punctuation" style="color:rgb(212, 212, 212)">:</span><span class="token plain"></span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain"> </span><span class="token keyword" style="color:rgb(86, 156, 214)">return</span><span class="token plain"> S3Cache</span><span class="token punctuation" style="color:rgb(212, 212, 212)">(</span><span class="token string" style="color:rgb(206, 145, 120)">"bucket_name"</span><span class="token punctuation" style="color:rgb(212, 212, 212)">,</span><span class="token plain"> </span><span class="token string" style="color:rgb(206, 145, 120)">'thumbs_cache/'</span><span class="token punctuation" style="color:rgb(212, 212, 212)">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain">THUMBNAIL_CACHE_CONFIG </span><span class="token operator" style="color:rgb(212, 212, 212)">=</span><span class="token plain"> init_thumbnail_cache</span><br></span></code></pre></div></div> |
| <p>Using the above example cache keys for dashboards will be <code>superset_thumb__dashboard__{ID}</code>. You can |
| override the base URL for selenium using:</p> |
| <div class="language-text codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#9CDCFE;--prism-background-color:#1E1E1E"><div class="codeBlockContent_QJqH"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar" style="color:#9CDCFE;background-color:#1E1E1E"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#9CDCFE"><span class="token plain">WEBDRIVER_BASEURL = "https://superset.company.com"</span><br></span></code></pre></div></div> |
| <p>Additional selenium web drive configuration can be set using <code>WEBDRIVER_CONFIGURATION</code>. You can |
| implement a custom function to authenticate selenium. The default function uses the <code>flask-login</code> |
| session cookie. Here's an example of a custom function signature:</p> |
| <div class="language-python codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#9CDCFE;--prism-background-color:#1E1E1E"><div class="codeBlockContent_QJqH"><pre tabindex="0" class="prism-code language-python codeBlock_bY9V thin-scrollbar" style="color:#9CDCFE;background-color:#1E1E1E"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#9CDCFE"><span class="token keyword" style="color:rgb(86, 156, 214)">def</span><span class="token plain"> </span><span class="token function" style="color:rgb(220, 220, 170)">auth_driver</span><span class="token punctuation" style="color:rgb(212, 212, 212)">(</span><span class="token plain">driver</span><span class="token punctuation" style="color:rgb(212, 212, 212)">:</span><span class="token plain"> WebDriver</span><span class="token punctuation" style="color:rgb(212, 212, 212)">,</span><span class="token plain"> user</span><span class="token punctuation" style="color:rgb(212, 212, 212)">:</span><span class="token plain"> </span><span class="token string" style="color:rgb(206, 145, 120)">"User"</span><span class="token punctuation" style="color:rgb(212, 212, 212)">)</span><span class="token plain"> </span><span class="token operator" style="color:rgb(212, 212, 212)">-</span><span class="token operator" style="color:rgb(212, 212, 212)">></span><span class="token plain"> WebDriver</span><span class="token punctuation" style="color:rgb(212, 212, 212)">:</span><span class="token plain"></span><br></span><span class="token-line" style="color:#9CDCFE"><span class="token plain"> </span><span class="token keyword" style="color:rgb(86, 156, 214)">pass</span><br></span></code></pre></div></div> |
| <p>Then on configuration:</p> |
| <div class="language-text codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#9CDCFE;--prism-background-color:#1E1E1E"><div class="codeBlockContent_QJqH"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar" style="color:#9CDCFE;background-color:#1E1E1E"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#9CDCFE"><span class="token plain">WEBDRIVER_AUTH_FUNC = auth_driver</span><br></span></code></pre></div></div></div><footer class="theme-doc-footer docusaurus-mt-lg"><div class="row margin-top--sm theme-doc-footer-edit-meta-row"><div class="col"><a href="https://github.com/apache/superset/edit/master/docs/versioned_docs/version-6.0.0/configuration/cache.mdx" target="_blank" rel="noopener noreferrer" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div><div class="col lastUpdated_JAkA"><span class="theme-last-updated">Last updated<!-- --> on <b><time datetime="2025-09-02T17:29:52.000Z" itemprop="dateModified">Sep 2, 2025</time></b> by <b>dependabot[bot]</b></span></div></div></footer></article><nav class="docusaurus-mt-lg pagination-nav" aria-label="Docs pages"><a class="pagination-nav__link pagination-nav__link--prev" href="/docs/6.0.0/configuration/alerts-reports"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">Alerts and Reports</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/docs/6.0.0/configuration/async-queries-celery"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">Async Queries via Celery</div></a></nav></div></div><div class="col col--3"><div class="tableOfContents_bqdL thin-scrollbar theme-doc-toc-desktop"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#dependencies" class="table-of-contents__link toc-highlight">Dependencies</a></li><li><a href="#fallback-metastore-cache" class="table-of-contents__link toc-highlight">Fallback Metastore Cache</a></li><li><a href="#chart-cache-timeout" class="table-of-contents__link toc-highlight">Chart Cache Timeout</a></li><li><a href="#sql-lab-query-results" class="table-of-contents__link toc-highlight">SQL Lab Query Results</a></li><li><a href="#caching-thumbnails" class="table-of-contents__link toc-highlight">Caching Thumbnails</a></li></ul></div></div></div></div></main></div></div></div><footer class="theme-layout-footer footer"><div class="container container-fluid"><div class="footer__bottom text--center"><div class="footer__copyright"> |
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