<div dir="ltr">Keycloak by default caches users in-memory, by default it will keep up to 10000 entries cached. You can verify that there's no leak by disabling the user cache provider. See <a href="http://keycloak.github.io/docs/userguide/keycloak-server/html/server_cache.html#d4e3187">http://keycloak.github.io/docs/userguide/keycloak-server/html/server_cache.html#d4e3187</a><div><br></div><div>If you're planning on having millions of users I suggest you increase the allocated memory for the JVM (512MB which it seems you have is not sufficient).</div></div><div class="gmail_extra"><br><div class="gmail_quote">On 22 June 2016 at 00:29, Chris Hairfield <span dir="ltr"><<a href="mailto:chairfield@gmail.com" target="_blank">chairfield@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hello,<div><br></div><div>When testing Keycloak 1.9.8 by ingesting a few million users, we find that Keycloak leaks memory until it is rendered unresponsive (see graph). Increasing JVM memory only increases the time it takes to encounter this issue.</div><div><br></div><div>We have put together a test project <a href="https://github.com/anaerobic/keycloak-leakage" target="_blank">here</a> and opened an issue <a href="https://issues.jboss.org/browse/KEYCLOAK-3146" target="_blank">here</a> as we continue to investigate. As we are relying on Keycloak as a central infrastructural component, any help would be greatly appreciated.</div><div><br></div><div>We'll update with more information as we find it.</div><div><br></div><div>Thanks,<br>Chris</div><div><br></div><div><img src="cid:155750e8bae64c0eceb1" alt="mem-cpu.png" style="max-width:100%"><br></div></div>
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