diff --git a/frameworks/roda/Dockerfile b/frameworks/roda/Dockerfile
index 33d857055..569dfdd52 100644
--- a/frameworks/roda/Dockerfile
+++ b/frameworks/roda/Dockerfile
@@ -12,7 +12,7 @@ ENV RUBY_MN_THREADS=1
 ENV RACK_ENV=production
 ENV WEB_CONCURRENCY=auto
 ENV MAX_THREADS=4
-ENV MAX_IO_THREADS=10
+ENV MAX_IO_THREADS=4
 
 WORKDIR /app
 
diff --git a/frameworks/roda/app.rb b/frameworks/roda/app.rb
index a116c0845..010dff1d8 100644
--- a/frameworks/roda/app.rb
+++ b/frameworks/roda/app.rb
@@ -54,7 +54,7 @@ class App < Roda
     end
 
     r.is('baseline11') do
-      total = request.params['a'].to_i + request.params['b'].to_i
+      total = request.GET['a'].to_i + request.GET['b'].to_i
       if request.post?
         total += request.body.read.to_i
       end
@@ -62,14 +62,14 @@ class App < Roda
     end
 
     r.is 'baseline2' do
-      total = request.params['a'].to_i + request.params['b'].to_i
+      total = request.GET['a'].to_i + request.GET['b'].to_i
       render_plain total.to_s
     end
 
     r.is 'json', Integer do |count|
       dataset = opts[:dataset_items]
       r.halt 500, 'No dataset' unless dataset
-      m = (request.params['m'] || 1).to_i
+      m = (request.GET['m'] || 1).to_i
       items = dataset.slice(0, count).map do |d|
         d.merge(total: (d[:price] * d[:quantity] * m))
       end
@@ -84,9 +84,9 @@ class App < Roda
     end
 
     r.is 'async-db' do
-      min_val = (request.params['min'] || 10).to_i
-      max_val = (request.params['max'] || 50).to_i
-      limit = (request.params['limit'] || 50).to_i.clamp(1, 50)
+      min_val = (request.GET['min'] || 10).to_i
+      max_val = (request.GET['max'] || 50).to_i
+      limit = (request.GET['limit'] || 50).to_i.clamp(1, 50)
 
       rows = self.class.get_async_db&.with do |connection|
         connection.exec_prepared('select', [min_val, max_val, limit])
@@ -100,9 +100,9 @@ class App < Roda
 
     r.is 'crud/items' do
       r.get do
-        category = request.params['category'] || 'electronics'
-        page = (request.params['page'] || 1).to_i
-        limit = (request.params['limit'] || 10).to_i
+        category = request.GET['category'] || 'electronics'
+        page = (request.GET['page'] || 1).to_i
+        limit = (request.GET['limit'] || 10).to_i
         offset = (page - 1) * limit
 
         rows = self.class.get_async_db&.with do |connection|
diff --git a/frameworks/roda/config.ru b/frameworks/roda/config.ru
index 37e474036..e970954d2 100644
--- a/frameworks/roda/config.ru
+++ b/frameworks/roda/config.ru
@@ -1,21 +1,4 @@
 require_relative 'app'
 
-# Threads marked as IO bound are allowed to go over Puma's max thread limit.
-class MarkAsIOBoundThreads
-  IOBoundPaths = %w[/baseline11 /baseline2 /async-db].map { [_1, nil] }.to_h.freeze
-
-  def initialize(app)
-    @app = app
-  end
-
-  def call(env)
-    if IOBoundPaths.has_key? env['PATH_INFO']
-      env["puma.mark_as_io_bound"].call
-    end
-    @app.call(env)
-  end
-end
-
-use MarkAsIOBoundThreads
 use Rack::Deflater # enable gzip
 run App