When comparing Web.go vs Iris, the Slant community recommends Iris for most people. In the question“What are the best web frameworks for Go?” Iris is ranked 13th while Web.go is ranked 17th. The most important reason people chose Iris is:
Iris is a "batteries included" web framework, which means that a lot of features already come out of the box. This way you don't have to spend time and find third-party libraries to integrate to the framework for most of the tasks you need to complete.
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Pros
Pro High performance
Web.go is a minimalistic web framework which adds routing to the net/http
package from the standard library. Even so, web.go tries to compensate for the small abstraction that it offers by structuring routes in a tree instead of a list. As such, it's a very fast framework which makes it a good choice in applications where good performance is key.
Pro No need to find and install external libraries
Iris is a "batteries included" web framework, which means that a lot of features already come out of the box. This way you don't have to spend time and find third-party libraries to integrate to the framework for most of the tasks you need to complete.
Pro Efficiency
Efficiency by using a light engine.
Pro Development
Pro API
If you're familiar with expressjs or other modern web frameworks, Iris will make you feel at home.
Pro More than feature complete
Pro More than 250 examples
More than 250 examples for implementing web application.
Pro Low amount of bugs
Most issues are questions, few bug reports and if a bug is found it's quickly patched.
Pro Good for big projects
Iris is a good framework for big projects and the author helps solving problems.
Cons
Con Doesn't add a lot of functionality on top of the standard library
Most of the tasks that web.go is used for can be completed with standard library support without adding the overhead of an additional external library and without having the risk of web.co development being abandoned one day.
Con Previously experience with net/http
Previously experience with the Go's standard net/http package is necessary for you to move forward with Iris.