feat(core): introduce BootstrapContext for improved server bootstrapping
#63562
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packages/core/schematics/migrations/bootstrap-application-to-server-application/README.md
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BootstrapContext for improved server bootstrapping
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…pping This commit introduces a number of changes to the server bootstrapping process to make it more robust and less error-prone, especially for concurrent requests. Previously, the server rendering process relied on a module-level global platform injector. This could lead to issues in server-side rendering environments where multiple requests are processed concurrently, as they could inadvertently share or overwrite the global injector state. The new approach introduces a `BootstrapContext` that is passed to the `bootstrapApplication` function. This context provides a platform reference that is scoped to the individual request, ensuring that each server-side render has an isolated platform injector. This prevents state leakage between concurrent requests and makes the overall process more reliable. BREAKING CHANGE: The server-side bootstrapping process has been changed to eliminate the reliance on a global platform injector. Before: ```ts const bootstrap = () => bootstrapApplication(AppComponent, config); ``` After: ```ts const bootstrap = (context: BootstrapContext) => bootstrapApplication(AppComponent, config, context); ``` A schematic is provided to automatically update `main.server.ts` files to pass the `BootstrapContext` to the `bootstrapApplication` call. In addition, `getPlatform()` and `destroyPlatform()` will now return `null` and be a no-op respectively when running in a server environment.
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This commit introduces a number of changes to the server bootstrapping process to make it more robust and less error-prone, especially for concurrent requests.
Previously, the server rendering process relied on a module-level global platform injector. This could lead to issues in server-side rendering environments where multiple requests are processed concurrently, as they could inadvertently share or overwrite the global injector state.
The new approach introduces a
BootstrapContextthat is passed to thebootstrapApplicationfunction. This context provides a platform reference that is scoped to the individual request, ensuring that each server-side render has an isolated platform injector. This prevents state leakage between concurrent requests and makes the overall process more reliable.BREAKING CHANGE:
The server-side bootstrapping process has been changed to eliminate the reliance on a global platform injector.
Before:
After:
A schematic is provided to automatically update
main.server.tsfiles to pass theBootstrapContextto thebootstrapApplicationcall.In addition,
getPlatform()anddestroyPlatform()will now returnnulland be a no-op respectively when running in a server environment.