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Edge Side Includes (ESI)

Knowledge Base / Glossary: "Edge Side Includes (ESI) are a type of markup language that allows web developers to create dynamic and personalized content for web pages. ESI works by allowing developers to specify certain parts of a web page that can be replaced with updated o..."

Edge Side Includes (ESI) are a type of markup language that allows web developers to create dynamic and personalized content for web pages. ESI works by allowing developers to specify certain parts of a web page that can be replaced with updated or personalized content. This content is typically stored on a separate server, known as an edge server, and is inserted into the web page when the page is requested by a user.

One of the main advantages of using ESI is that it can greatly improve the performance of a website. By allowing certain parts of a web page to be cached on the edge server, ESI can reduce the amount of data that needs to be transferred between the web server and the user's browser. This can significantly reduce the time it takes for a web page to load, which can improve the User Experience and increase the overall performance of the website.

Another benefit of ESI is that it allows for the creation of personalized and dynamic content on a web page. For example, a web developer could use ESI to insert the user's name or other personal information into a page, or to display different content based on the user's location or other factors. This can make a website feel more personalized and tailored to the user, which can improve the overall user experience.

In summary, ESI is a markup language that allows web developers to create dynamic and personalized content for web pages. It can improve the performance of a website by reducing the amount of data that needs to be transferred, and it allows for the creation of personalized content that can improve the user experience.