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4.0877-4.0877-4.0877c-2.9418 2.9419-7.7115 2.9419-10.6533 0-2.9419-2.9418-2.9419-7.7115 0-10.6533 2.9418-2.9419 7.7115-2.9419 10.6533 0 2.9419 2.9418 2.9419 7.7115 0 10.6533z" stroke="currentColor" fill="none" fill-rule="evenodd" stroke-linecap="round" stroke-linejoin="round"></path></svg><span class="DocSearch-Button-Placeholder">Search</span></span><span class="DocSearch-Button-Keys"></span></button></div></div></div><div role="presentation" class="navbar-sidebar__backdrop"></div></nav><div class="main-wrapper"><main><div><script src="//cdn.matomo.cloud/apachelinkis.matomo.cloud/matomo.js"></script><div class="home-page slogan"><div class="ctn-block"><div class="banner text-center"><h1 class="home-title"><span class="apache">Apache</span> <span class="linkis">Linkis</span> <span class="badge">Incubating</span></h1><p class="home-desc">Linkis builds a computation middleware layer to decouple the upper applications and the underlying data engines, provides standardized interfaces (REST, JDBC, WebSocket etc.) to easily connect to various underlying engines (Spark, Presto, Flink, etc.), while enables cross engine context sharing, unified job& engine governance and orchestration.</p><div class="botton-row center"><a href="/docs/latest/deployment/quick_deploy" class="corner-botton blue-fill">Get Start</a><a href="https://github.com/apache/incubator-linkis" target="_blank" class="corner-botton blue"><img class="button-icon" src="data:image/png;base64,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" alt="github"><span>GitHub</span></a></div></div></div></div><div class="home-page introduce"><div class="ctn-block"><h1 class="home-block-title text-center">Computation Middleware</h1><div class="concept home-block"><div class="concept-item before"><h3 class="concept-title">Before</h3><div class="concept-ctn"><p class="home-paragraph">Each upper application directly connects to and accesses various underlying engines in a tightly coupled way, which makes big data platform a complex network architecture.</p><div class="before-image"><img src="/home/before_linkis_en.png" alt="before" class="concept-image"></div></div></div><div class="concept-item after"><h3 class="concept-title">After</h3><div class="concept-ctn"><p class="home-paragraph">Build a common layer of "computation middleware" between the numerous upper-layer applications and the countless underlying engines to resolve these complex connection problems in a standardized reusable way |
| </p><img src="/home/after_linkis_en.png" alt="before" class="concept-image"></div></div></div></div></div><div class="home-page"><div class="ctn-block description"><h1 class="home-block-title text-center">Description</h1><div class="home-block" style="position:relative"><div class="top-desc"><h3 class="home-paragraph-title">Standardized Interfaces</h3><p class="home-paragraph">Linkis provides standardized interfaces (REST, JDBC, WebSocket etc.) to easily connect to various underlying engines (Spark, Presto, Flink, etc.), and acts as a proxy between the upper applications layer and underlying engines layer.</p></div><div class="bold-dot" style="top:64px;left:416px"></div><div class="bold-dot" style="top:728px;left:240px"></div><img src="/home/description.png" alt="description" class="description-image"><svg width="860" height="860" viewBox="0 0 100 100"><circle cx="50" cy="50" r="49.8" class="dotted"></circle></svg><div class="top-desc"><h3 class="home-paragraph-title">Computation Governance</h3><p class="home-paragraph">Linkis is able to facilitate the connectivity, governance and orchestration capabilities of different kind of engines like OLAP, OLTP (developing), Streaming, and handle all these "computation governance" affairs in a standardized reusable way.</p></div><div class="botton-row center"><a href="/docs/latest/introduction" class="corner-botton blue-fill">Learn More</a></div></div></div></div><div class="home-page feature"><div class="ctn-block"><h1 class="home-block-title text-center">Core Features</h1><div class="features home-block text-center"><div class="feature-item connectivity"><h3 class="item-title">Connectivity</h3><p class="item-desc">Simplify the operation environment; decouple the upper and lower layers, which make the upper layer insensitive when bottom layers changed</p></div><div class="feature-item scalability"><h3 class="item-title">Scalability</h3><p class="item-desc">Distributed microservice architecture with great scalability and extensibility; quickly integrate with the new underlying engine</p></div><div class="feature-item controllability"><h3 class="item-title">Controllability</h3><p class="item-desc">Converge engine entrance, unify identity verification, high-risk prevention and control, audit records; label-based multi-level refined resource control and recovery capabilities</p></div><div class="feature-item orchestration"><h3 class="item-title">Orchestration</h3><p class="item-desc">Computing strategy design based on active-active, mixed computing, transcation Orchestrator Service</p></div><div class="feature-item reusability"><h3 class="item-title">Reusability</h3><p class="item-desc">Highly reduced the back-end development workload of upper-level applications development; Swiftly and efficiently build a data platform tool suite based on Linkis</p></div></div></div></div></div></main></div><footer class="footer"><div class="container"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Linkis</div><ul class="footer__items"><li class="footer__item"><a class="footer__link-item" href="/docs/latest/introduction">Document</a></li><li class="footer__item"><a class="footer__link-item" href="/faq/main">FAQ</a></li><li class="footer__item"><a href="https://github.com/apache/incubator-linkis/releases" target="_blank" rel="noopener noreferrer" class="footer__link-item"><span>Releases<svg width="13.5" height="13.5" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_wgqa"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></span></a></li></ul></div><div class="col footer__col"><div class="footer__title">Community</div><ul class="footer__items"><li class="footer__item"><a href="https://github.com/apache/incubator-linkis" target="_blank" rel="noopener noreferrer" class="footer__link-item"><span>GitHub<svg width="13.5" height="13.5" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_wgqa"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></span></a></li><li class="footer__item"><a href="https://github.com/apache/incubator-linkis/issues" target="_blank" rel="noopener noreferrer" class="footer__link-item"><span>Issue Tracker<svg width="13.5" height="13.5" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_wgqa"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></span></a></li><li class="footer__item"><a href="https://github.com/apache/incubator-linkis/pulls" target="_blank" rel="noopener noreferrer" class="footer__link-item"><span>Pull Requests<svg width="13.5" height="13.5" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_wgqa"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></span></a></li></ul></div><div class="col footer__col"><div class="footer__title">Subscribe Mailing List</div><ul class="footer__items"><li class="footer__item"><a class="footer__link-item" href="/community/how-to-subscribe">How to Subscribe</a></li><li class="footer__item"><a href="mailto:dev-subscribe@linkis.apache.org" target="_blank" rel="noopener noreferrer" class="footer__link-item"><span>Subscribe Mail<svg width="13.5" height="13.5" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_wgqa"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></span></a></li><li class="footer__item"><a href="https://lists.apache.org/list.html?dev@linkis.apache.org" target="_blank" rel="noopener noreferrer" class="footer__link-item"><span>Mail Archive<svg width="13.5" height="13.5" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_wgqa"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></span></a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright"><div><img style="height:50px" alt="Apache Software Foundation" src="/img/incubator-logo.svg"><p style="color: #999999; 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