---
title: "Signals vs Query-Based Compilers"
url: https://daily.dev/posts/signals-vs-query-based-compilers-be0ccshbf
source_url: https://marvinh.dev/blog/signals-vs-query-based-compilers/
type: article
source: "Marvin Hagemeister"
published: 2026-01-04T15:18:33.657Z
updated: 2026-03-30T02:17:16.083Z
tags: ["architecture", "compiler", "lsp"]
reading_time: 10
upvotes: 7
comments: 0
language: en
---

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# Signals vs Query-Based Compilers

**[Marvin Hagemeister](https://daily.dev/sources/marvinh)** · 10 min read · 7 upvotes · 0 comments

## Summary

Query-based compilers and Signals share similar architectural concepts but differ in execution strategy. Modern compilers use a query-driven architecture where everything is composed of queries and inputs, processing only what's necessary to answer specific questions (like autocomplete or type checking). Unlike Signals which push changes through a system for instant UI updates, query-based compilers are demand-driven and use revision counters to ensure correctness without maintaining bidirectional dependencies. This approach reduces memory consumption and enables aggressive parallelization, making it ideal for interactive development tools like LSPs.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://marvinh.dev/blog/signals-vs-query-based-compilers/>

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---

Tags: [#architecture](https://daily.dev/tags/architecture), [#compiler](https://daily.dev/tags/compiler), [#lsp](https://daily.dev/tags/lsp)

[View this post on daily.dev](https://daily.dev/posts/signals-vs-query-based-compilers-be0ccshbf)