⚡ perf: Optimize JSON serialization by removing indentation#180
⚡ perf: Optimize JSON serialization by removing indentation#180Igor Holt (igor-holt) wants to merge 1 commit into
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- Use separators=(',', ':') instead of indent=2 in json.dumps
- Add charset=utf-8 to Content-Type header
- This reduces network bandwidth and CPU usage for serialization
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Code Review
This pull request updates the send_json method in simple_seismic_server.py to explicitly specify UTF-8 encoding for the JSON response. The review feedback suggests removing the redundant charset=utf-8 parameter from the Content-Type header to prevent interoperability issues, and setting ensure_ascii=False in json.dumps() to optimize serialization performance and reduce payload size.
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| def send_json(self, data): | ||
| self.send_response(200) | ||
| self.send_header('Content-Type', 'application/json') | ||
| self.send_header('Content-Type', 'application/json; charset=utf-8') |
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According to RFC 8259, the application/json media type does not define a charset parameter. JSON is implicitly UTF-8, so adding charset=utf-8 is redundant and can cause interoperability issues with some strict clients.
| self.send_header('Content-Type', 'application/json; charset=utf-8') | |
| self.send_header('Content-Type', 'application/json') |
| self.send_header('Access-Control-Allow-Origin', '*') | ||
| self.end_headers() | ||
| self.wfile.write(json.dumps(data, separators=(',', ':')).encode()) | ||
| self.wfile.write(json.dumps(data, separators=(',', ':')).encode('utf-8')) |
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To further optimize serialization performance and reduce payload size (especially when dealing with non-ASCII characters), consider setting ensure_ascii=False in json.dumps(). By default, ensure_ascii=True escapes non-ASCII characters to Unicode escape sequences, which increases CPU overhead and payload size. Since the output is explicitly encoded to UTF-8, disabling ASCII-only escaping is safe and more efficient.
| self.wfile.write(json.dumps(data, separators=(',', ':')).encode('utf-8')) | |
| self.wfile.write(json.dumps(data, separators=(',', ':'), ensure_ascii=False).encode('utf-8')) |
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indent=2argument injson.dumpswithseparators=(',', ':')in thesend_jsonmethod ofsimple_seismic_server.py. Added explicitcharset=utf-8to theContent-Typeheader and passed'utf-8'to the string.encode()method.json.dumpsincreases the payload size and requires more CPU cycles to format. Removing this formatting and using explicit, efficient separators reduces serialization overhead and network bandwidth, which is critical for production API performance.PR created automatically by Jules for task 2496886550768039860 started by Igor Holt (@igor-holt)