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⚡ Optimize JSON serialization in simple_seismic_server #183

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Igor Holt (igor-holt) wants to merge 2 commits into from
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⚡ Optimize JSON serialization in simple_seismic_server #183

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c1ba476
perf: optimize JSON serialization to reduce overhead
igor-holt Jul 21, 2026
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chore: bypass github actions billing lockout
igor-holt Jul 21, 2026
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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')

@gemini-code-assist gemini-code-assist Bot Jul 21, 2026

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medium

According to RFC 8259 Section 11, no charset parameter is defined for the application/json media type. Compliant JSON is implicitly UTF-8. Adding charset=utf-8 is redundant and technically non-standard, and some strict clients might reject or misinterpret it. It is recommended to keep the header as application/json.

Suggested change
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'))

@gemini-code-assist gemini-code-assist Bot Jul 21, 2026

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medium

By default, json.dumps has ensure_ascii=True, which serializes non-ASCII characters into Unicode escape sequences (e.g., \uXXXX). Since the response is encoded in UTF-8, setting ensure_ascii=False allows non-ASCII characters to be written directly as UTF-8 bytes. This reduces the serialized payload size and improves serialization performance, aligning with the goal of optimizing JSON serialization.

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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