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fix: optimize isHtml() to read only first 512 bytes instead of entire file

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Changed from reading full file content to reading first 512 bytes in
binary mode, significantly improving static file serving performance
for large files like echarts.min.js (1MB+).

Before: async with aiofiles.open(fn,'r',encoding='utf-8') as f: b = await f.read()
After:  async with aiofiles.open(fn,'rb') as f: b = await f.read(512)
This commit is contained in:
yumoqing 2026-05-26 09:27:52 +08:00
parent f0bf17a72c
commit a691774afd
1 changed files with 3 additions and 2 deletions
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5
ahserver/processorResource.py
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@ -397,8 +397,9 @@ class ProcessorResource(StaticResource,Url2File):
async def isHtml(self,fn): async def isHtml(self,fn):
try: try:
async with aiofiles.open(fn,'r',encoding='utf-8') as f: async with aiofiles.open(fn,'rb') as f:
b = await f.read() b = await f.read(512)
b = b.decode('utf-8', errors='ignore')
while b[0] in ['\n',' ','\t']: while b[0] in ['\n',' ','\t']:
b = b[1:] b = b[1:]
if b.lower().startswith('<html>'): if b.lower().startswith('<html>'):