Middleware

A location in Itsi is similar to a Location in NGINX. It’s a logical container for all requests matching some combination of:

• Routes/Route expressions
• Request Methods
• Content Types
• Accept Headers
• File types
• Host/port/scheme.

For example:

location "/admin/*" do

  etag \
    type: 'strong',
    algorithm: 'md5',
    min_body_size: 1024 * 1024
  # ...

  location "/public/images", extensions: %w[jpg png] do
    compress \
      min_size: 1024 * 1024,
      level: 'fastest',
      algorithms: %w[zstd gzip br deflate],
      mime_types: %w[all],
      compress_streams: true
    # ...
  end
end

When a route matches a location block, it recursively inherits all middleware that is defined within outer ancestor blocks. Where a child and an ancestor define the same middleware, the child’s middleware takes precedence.