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<h2 id="projects">Projects</h2>
<p>The main COSMOS <a href="https://github.com/OpenC3/cosmos">repo</a> contains all the source code used to build and run COSMOS. However, users (not developers) of COSMOS should use the COSMOS <a href="https://github.com/OpenC3/cosmos-project">project</a> to launch COSMOS. The project consists of the <a href="https://github.com/OpenC3/cosmos-project/blob/main/openc3.sh">openc3.sh</a> and <a href="https://github.com/OpenC3/cosmos-project/blob/main/openc3.bat">openc3.bat</a> files for starting and stopping COSMOS, the <a href="https://github.com/OpenC3/cosmos-project/blob/main/compose.yaml">compose.yaml</a> for configuring the COSMOS containers, and the <a href="https://github.com/OpenC3/cosmos-project/blob/main/.env">.env</a> file for setting runtime variables. Additionally, the COSMOS project contains user modifiable config files for both Redis and Traefik.</p>
<h2 id="containerization">Containerization</h2>
<h3 id="images">Images</h3>
<p>Per <a href="https://docs.docker.com/get-started/overview/#images">Docker</a>, "An image is a read-only template with instructions for creating a Docker container." The base operating system COSMOS uses is called <a href="https://www.alpinelinux.org/">Alpine Linux</a>. It is a simple and compact image with a full package system that allows us to install our dependencies. Starting with Alpine, we create a <a href="https://docs.docker.com/engine/reference/builder/">Dockerfile</a> to add Ruby and Python and a few other packages to create our own docker image. We further build upon that image to create a NodeJS image to support our frontend and additional images to support our backend.</p>
@@ -38,8 +38,8 @@
<h3 id="redis">Redis</h3>
<p><a href="https://redis.io/">Redis</a> is an in-memory data store with support for strings, hashes, lists, sets, sorted sets, streams, and more. COSMOS uses Redis to store both our configuration and data. If you look back at our <a href="/docs/getting-started/key_concepts#containers">container list</a> you'll notice two redis containers: cosmos-openc3-redis-1 and cosmos-openc3-redis-ephemeral-1. The ephemeral container contains all the real-time data pushed into <a href="https://redis.io/docs/data-types/streams/">Redis streams</a>. The other redis container contains COSMOS configuration that is meant to persist. <a href="https://openc3.com/enterprise">COSMOS Enterprise</a> provides helm charts that setup <a href="https://redis.io/docs/management/scaling/">Redis Cluster</a> to perform horizontal scaling where data is shared across multiple Redis nodes.</p>
<h3 id="minio">MinIO</h3>
<p><a href="https://min.io/">MinIO</a> is a high-performance, S3 compatible object store. COSMOS uses this storage technology to host both the COSMOS tools themselves and the long term log files. <a href="https://openc3.com/enterprise">COSMOS Enterprise</a> deployed in a cloud environment uses the available cloud native bucket storage technology, e.g. AWS S3, GCP Buckets, and Azure Blob Storage. Using bucket storage allows COSMOS to directly serve the tools as a static website and thus we don't need to deploy Tomcat or Nginx for example.</p>
<h3 id="ruby-on-rails">Ruby on Rails</h3>
-<p>The COSMOS API and Script Runner backends are powered by <a href="https://rubyonrails.org/">Ruby on Rails</a>. Rails is a web application development framework written in the Ruby programming language. 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+<p>The COSMOS API and Script Runner backends are powered by <a href="https://rubyonrails.org/">Ruby on Rails</a>. Rails is a web application development framework written in the Ruby programming language. Rails (and our familiarity with Ruby) allows us to write less code while accomplishing more than many other languages and frameworks.</p></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/OpenC3/cosmos/tree/main/docs.openc3.com/docs/getting-started/key_concepts.md" target="_blank" rel="noopener noreferrer" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_UohW" 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_g62E"></div></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Docs pages"><a class="pagination-nav__link pagination-nav__link--prev" 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