---
title: "Component hydration patterns that actually work with Jaspr"
url: https://daily.dev/posts/component-hydration-patterns-that-actually-work-with-jaspr-u2sibhkcu
source_url: https://medium.com/flutter-community/component-hydration-patterns-that-actually-work-with-jaspr-6bc9cf004809
type: article
source: "Flutter Community"
published: 2026-03-31T01:25:46.842Z
updated: 2026-03-31T01:26:22.347Z
tags: ["webdev", "dart"]
reading_time: 8
upvotes: 1
comments: 1
language: en
---

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# Component hydration patterns that actually work with Jaspr

**[Flutter Community](https://daily.dev/sources/flutter_com)** · 8 min read · 1 upvotes · 1 comments

## Summary

Jaspr, a Dart-based web framework inspired by Flutter, addresses SSR hydration complexity through automatic state synchronization. Unlike React or Vue where developers manually manage server-client data boundaries with directives like 'use client', Jaspr uses the @sync annotation and PreloadStateMixin to automatically serialize and transfer component state from server to client. The post covers handling non-serializable state (WebSockets, DOM refs) via kIsWeb checks, rendering mode selection (SSR/SSG/CSR via pubspec.yaml), Islands Architecture support via @island for reduced JS payloads, and testing hydration with the jaspr_test package without a real browser. The tradeoff is reduced control over serialization timing in exchange for fewer hydration bugs.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://medium.com/flutter-community/component-hydration-patterns-that-actually-work-with-jaspr-6bc9cf004809>

## Community discussion

Top comments from developers on daily.dev.

**@allinonetools** · 1 upvotes

> Nice approach. Automatic state sync with `@sync` can save a lot of hydration headaches compared to manually managing boundaries, especially in SSR apps.

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---

Tags: [#webdev](https://daily.dev/tags/webdev), [#dart](https://daily.dev/tags/dart)

[View this post on daily.dev](https://daily.dev/posts/component-hydration-patterns-that-actually-work-with-jaspr-u2sibhkcu)