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Cowboy

598
59
+ 1
19
Unicorn

483
365
+ 1
295
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Cowboy vs Unicorn: What are the differences?

What is Cowboy? Small, fast, modular HTTP server written in Erlang. Cowboy aims to provide a complete HTTP stack in a small code base. It is optimized for low latency and low memory usage, in part because it uses binary strings. Cowboy provides routing capabilities, selectively dispatching requests to handlers written in Erlang.

What is Unicorn? Rack HTTP server for fast clients and Unix. Unicorn is an HTTP server for Rack applications designed to only serve fast clients on low-latency, high-bandwidth connections and take advantage of features in Unix/Unix-like kernels. Slow clients should only be served by placing a reverse proxy capable of fully buffering both the the request and response in between Unicorn and slow clients.

Cowboy and Unicorn can be primarily classified as "Web Servers" tools.

"Websockets integration" is the primary reason why developers consider Cowboy over the competitors, whereas "Fast" was stated as the key factor in picking Unicorn.

Cowboy and Unicorn are both open source tools. Cowboy with 5.59K GitHub stars and 999 forks on GitHub appears to be more popular than Unicorn with 1.35K GitHub stars and 249 GitHub forks.

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Pros of Cowboy
Pros of Unicorn
  • 8
    Websockets integration
  • 6
    Cool name
  • 3
    Good to use with Erlang
  • 2
    Anime mascot
  • 81
    Fast
  • 59
    Performance
  • 36
    Web server
  • 30
    Open Source
  • 30
    Very light
  • 27
    Rack http server
  • 18
    Load balancing
  • 14
    Great process management

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Cons of Cowboy
Cons of Unicorn
    Be the first to leave a con
    • 4
      Not multithreaded

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    What is Cowboy?

    Cowboy aims to provide a complete HTTP stack in a small code base. It is optimized for low latency and low memory usage, in part because it uses binary strings. Cowboy provides routing capabilities, selectively dispatching requests to handlers written in Erlang.

    What is Unicorn?

    Unicorn is an HTTP server for Rack applications designed to only serve fast clients on low-latency, high-bandwidth connections and take advantage of features in Unix/Unix-like kernels. Slow clients should only be served by placing a reverse proxy capable of fully buffering both the the request and response in between Unicorn and slow clients.

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    What companies use Cowboy?
    What companies use Unicorn?
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    What are some alternatives to Cowboy and Unicorn?
    NGINX
    nginx [engine x] is an HTTP and reverse proxy server, as well as a mail proxy server, written by Igor Sysoev. According to Netcraft nginx served or proxied 30.46% of the top million busiest sites in Jan 2018.
    Apache HTTP Server
    The Apache HTTP Server is a powerful and flexible HTTP/1.1 compliant web server. Originally designed as a replacement for the NCSA HTTP Server, it has grown to be the most popular web server on the Internet.
    Microsoft IIS
    Internet Information Services (IIS) for Windows Server is a flexible, secure and manageable Web server for hosting anything on the Web. From media streaming to web applications, IIS's scalable and open architecture is ready to handle the most demanding tasks.
    Apache Tomcat
    Apache Tomcat powers numerous large-scale, mission-critical web applications across a diverse range of industries and organizations.
    OpenResty
    OpenResty (aka. ngx_openresty) is a full-fledged web application server by bundling the standard Nginx core, lots of 3rd-party Nginx modules, as well as most of their external dependencies.
    See all alternatives