HTTP/2 vs. HTTP/1.1

The Advantages of the Next Generation of Web Protocol

HTTP/2 is the next generation of web protocol that offers significant advantages over HTTP/1.1, including faster load times, improved performance, better security, and cross-language support.

With its powerful service-oriented architecture, cross-language support, and auto-generated APIs, Sylk streamlines the development process and reduces pain points for developers. By building services on top of gRPC, Sylk provides HTTP/2 support out of the box, making it accessible to our users.

Here's a comparison table between HTTP/1.1 and HTTP/2 that highlights the important categories:








No multiplexing support

Supports multiple requests over a single TCP connection

Header size

Headers are not compressed

Headers are compressed using HPACK compression


High due to head-of-line blocking

Low due to multiplexing and stream prioritization


Requires an additional SSL/TLS layer for encryption

Built-in encryption with HTTPS by default


Fully supported by all browsers

Some older browsers do not support it


Simpler to implement

More complex to implement

By integrating HTTP/2 into your web application development, you can significantly improve the user experience. With support for multiplexing and server push, HTTP/2 offers faster load times and a more responsive experience. Additionally, the use of header compression and built-in encryption provide better security and reduced bandwidth usage.

Multiplexing and Streaming

One of the most significant improvements in HTTP/2 is the support for multiplexing, which allows multiple requests to be sent and received over a single connection. In contrast, HTTP/1.1 opens multiple connections to the server, which can lead to a slower and less efficient experience. Additionally, HTTP/2 introduces the concept of server push, which allows the server to push content proactively to the client. Streaming in HTTP/2 revolutionizes the way services interact, offering benefits beyond traditional request-response patterns. By leveraging the power of multiplexing and streaming in HTTP/2, services built on gRPC and other technologies can achieve highly efficient communication, real-time data transfer, and improved user experiences.

Header Compression

HTTP/2 introduces a new header compression algorithm called HPACK, which compresses headers before they are sent over the network. This reduces the amount of data that needs to be transmitted and leads to faster load times. In contrast, HTTP/1.1 sends headers in plaintext, which can lead to slower load times and higher bandwidth usage.


Another important advantage of HTTP/2 is its lower latency compared to HTTP/1.1. In HTTP/1.1, requests are processed sequentially, which means that subsequent requests have to wait for the completion of earlier requests. This is known as head-of-line blocking and can lead to slower load times. In contrast, HTTP/2 uses multiplexing and stream prioritization to reduce latency and improve overall performance.


HTTP/2 requires the use of Transport Layer Security (TLS) encryption by default, which means that all data transmitted over the web is more secure than with HTTP/1.1. In contrast, HTTP/1.1 requires an additional SSL/TLS layer for encryption.