HTTP/2

Why Was HTTP/2 Needed?

HTTP/1.1 had limitations:

1. One Request at a Time Per Connection: If your browser needs to load multiple resources (like images, CSS, and JavaScript), it must open multiple connections, which is slow.
2. Head-of-Line Blocking: A slow response would block other requests in the same connection.
3. High Overhead: Each request and response carries extra metadata, making communication heavier and slower.

Key Features of HTTP/2

1. Multiplexing:

   • Multiple requests and responses can be sent simultaneously over a single connection.
   • No more waiting for one request to finish before starting another.

2. Header Compression:

   • HTTP headers are compressed, reducing their size and speeding up communication.

3. Binary Protocol:

   • HTTP/2 uses binary format (0s and 1s) instead of the textual format in HTTP/1.1. Binary is easier for computers to process, making it faster.

4. Server Push:

   • The server can "push" resources to the client before the client even asks. For example, if you load a webpage, the server might send its CSS and JavaScript files immediately, knowing you'll need them.

5. Persistent Connection:

   • A single connection stays open for the entire session, avoiding the overhead of opening and closing multiple connections.

HTTP/1.1:

Imagine you're at a restaurant where you order dishes one at a time. The waiter brings one dish, waits for you to finish, and then goes back to the kitchen for the next dish. This is slow and inefficient.

HTTP/2:

Here, the waiter brings all the dishes together, or even anticipates what you'll order and brings it in advance. This saves time and speeds up your dining experience.

Ensure ur server supports HTTP-2