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| <h1>Core Concepts in Apache Shiro</h1> |
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| <div class="title">Shiro v1 version notice</div> |
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| <p>As of 2024-02-28, Shiro v1 will soon be superseded by v2.<p> |
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| <p>This part of the documentation covers Shiro’s core architectural concepts.</p> |
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| <p>First we’ll present Shiro’s architecture and a summary of each core concept. Then we’ll cover the most important concept in Shiro - the <code>Subject</code>, a security-specific 'view' of a <strong>single</strong> application user. |
| Next we’ll discuss the <strong>SecurityManager</strong>, an application singleton that manages all Subjects for the application, and as well as the SecurityManager’s supporting components that do most of Shiro’s heavy lifting. |
| Then onto Realms, the security-specific DAOs, Shiro communicates with and then Permissions, the building block of any security policy.</p> |
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