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⚡ perf: Optimize JSON serialization payload size and overhead #122

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⚡ perf: Optimize JSON serialization payload size and overhead #122

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4 changes: 2 additions & 2 deletions simple_seismic_server.py
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Original file line number Diff line number Diff line change
Expand Up @@ -109,10 +109,10 @@ def do_GET(self):

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')
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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@gemini-code-assist gemini-code-assist Bot May 17, 2026

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medium

Since you are explicitly setting the charset to UTF-8 in the headers and encoding the output as UTF-8, you should set ensure_ascii=False in the json.dumps call. By default, json.dumps escapes non-ASCII characters (e.g., \u1234), which increases payload size and negates the benefit of using a UTF-8 encoding for the transport. Setting this to False will result in smaller payloads for non-ASCII data and is more consistent with your goal of 'robust character serialization'. Additionally, note that .encode('utf-8') is the default for .encode() in Python 3, making that part of the change redundant but harmless.

Suggested change
self.wfile.write(json.dumps(data, separators=(',', ':')).encode('utf-8'))
self.wfile.write(json.dumps(data, separators=(',', ':'), ensure_ascii=False).encode('utf-8'))


def log_message(self, format, *args):
"""Override to customize logging"""
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