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API design & gRPC

REST best practices, protobuf, API versioning, and backward-compatible service contracts.

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API design & gRPC easy

How to Mock HTTP 304 Responses with If-None-Match in Python

Spin up a local HTTP server that returns a 304 Not Modified when a request carries a matching ETag, useful for testing cache behavior.

http caching mock-server
Python 
from http.server import BaseHTTPRequestHandler, HTTPServer
from threading import Thread
import urllib.request

ETAG = '"abc123"'
BODY = b'{"status": "ok"}'

class MockServer(BaseHTTPRequestHandler):
    def do_GET(self):
        if self.headers.get('If-None-Match') == ETAG:
            self.send_response(304)
        …
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