> For the complete documentation index, see [llms.txt](https://docs.sonsofphp.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.sonsofphp.com/components/event-sourcing.md). # Event Sourcing Using the Event Sourcing Component allows you to manage an Event Sourced application. ## Installation ```shell composer require sonsofphp/event-sourcing ``` ### Additional Features Additional features and functionality can be enabled by installing additional packages. #### Doctrine Installing the Doctrine Bridge will allow the storage of event messages in a database. ```shell composer require sonsofphp/event-sourcing-doctrine ``` #### Symfony Installing the Symfony Bridge will add addition functionality such as allowing events to be sent asynchronously using the Messenger Component. It allows has options to generate UUID/ULID for Aggregates. ```shell composer require sonsofphp/event-sourcing-symfony ``` --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.sonsofphp.com/components/event-sourcing.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.