Small performance improvements

[itamarst]

Fixes #755

Tested with

import time
from twisted.web import server
from twisted.internet.testing import StringTransport
from klein import Klein

app = Klein()

@app.route("/", branch=True)
def main(request):
    return "hello world"

factory = server.Site(app.resource())

start = time.time()
for i in range(20_000):
    transport = StringTransport()
    protocol = factory.buildProtocol(None)
    protocol.makeConnection(transport)
    protocol.dataReceived(b"""\
GET / HTTP/1.1
Host: example.com
User-Agent: XXX
Time: XXXX
Content-Length: 0

""".replace(b"\n", b"\r\n"))# + (b"X" * 100))
    assert b"200 OK" in transport.io.getvalue()
print("requests/sec:", 20_000 / (time.time() - start))

[itamarst]

This is... maybe a good idea? Depends on how common this case is.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.08%. Comparing base (04db6d2) to head (671dd1f).
Report is 4 commits behind head on trunk.

Additional details and impacted files

@@           Coverage Diff           @@
##            trunk     #773   +/-   ##
=======================================
  Coverage   99.08%   99.08%           
=======================================
  Files          48       48           
  Lines        4042     4045    +3     
  Branches      544      545    +1     
=======================================
+ Hits         4005     4008    +3     
  Misses         23       23           
  Partials       14       14           

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[glyph]

@itamarst this looks unobjectionable but I am curious if you could set up codespeed first, so as to get a baseline?

[adiroiban]

Thanks for the updates.

It looks like this is waiting in the review queue for a long time.
I think that is best to merge it, witout waiting for other tasks.

We can setup codespeed in a separate PR.