https://ai-blog.noorshomelab.dev/tags/subscriptions/Recent content in Subscriptions on AI VOIDHugoenSat, 14 Mar 2026 00:00:00 +0000https://ai-blog.noorshomelab.dev/spacetime-db-guide-2026/chapter-4-querying-data-retrieval/Sat, 14 Mar 2026 00:00:00 +0000https://ai-blog.noorshomelab.dev/spacetime-db-guide-2026/chapter-4-querying-data-retrieval/<h2 id="introduction">Introduction</h2> <p>Welcome back, future SpaceTimeDB master! In the previous chapter, you learned how to define your database schema and create tables to store your application&rsquo;s shared state. You even got a taste of how to add data to these tables using reducers. But what good is storing data if you can&rsquo;t get it back out?</p> <p>This chapter is all about <strong>querying your data</strong>. We&rsquo;ll dive into how clients can ask SpaceTimeDB for specific pieces of information and how that information is kept up-to-date in real-time. We&rsquo;ll explore the unique subscription model that makes SpaceTimeDB so powerful for real-time applications, and also touch upon how server-side logic (like your reducers) can access and filter data. By the end of this chapter, you&rsquo;ll be able to retrieve exactly the data you need, when you need it, and react to changes instantly.</p>