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Renhua Wei profile picture

Renhua Wei

Solo developer building practical CLI tools for Linux auditing and B2B data extraction. Creator of Vaultcheck and NPILift. I write about silent failures, false green lights, and infrastructure reliabi

Location Sichuan, China Joined Joined on  Email address support@dafili.cn Personal website https://vaultcheck.dafili.cn github website

Education

Self-taught

Pronouns

He/Him

Work

Independent Software Developer & Founder at MediaForge Studio

Silent Failure #1: The Dict Key That Only Breaks When You Attach a File
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Silent Failure #1: The Dict Key That Only Breaks When You Attach a File

#python #webdev #testing #opensource
1
Comments 2
4 min read

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A 7.5-year-old CVE, a 42-line patch, and the afternoon nobody had
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A 7.5-year-old CVE, a 42-line patch, and the afternoon nobody had

#performance #opensource #python #security
2
Comments
5 min read
Your AI Agent's Patch Is Fine. The Repo Won't Let You File It.
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Your AI Agent's Patch Is Fine. The Repo Won't Let You File It.

#opensource #ai #devops #career
6
Comments
4 min read
Three Ways a Form Submission Dies Without an Error
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Three Ways a Form Submission Dies Without an Error

#showdev #webdev #devops
2
Comments 6
4 min read
Three Checks That All Answered 250
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Three Checks That All Answered 250

#devops #monitoring #observability #sre
1
Comments 4
5 min read
Six Ways an Alert Dies Silently (I Found All Six in 24 Hours)
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Six Ways an Alert Dies Silently (I Found All Six in 24 Hours)

#devops #monitoring #observability #sre
Comments 2
5 min read
Why your cloud monitoring is blind to IPv6 blackholes (and how to fix it)
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Why your cloud monitoring is blind to IPv6 blackholes (and how to fix it)

#devops #networking #monitoring #sre
1
Comments 2
9 min read
Your monitor is reporting its own network problems
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Your monitor is reporting its own network problems

#devops #monitoring #linux #networking
Comments 10
7 min read
Three checks that look like they passed, but validated nothing
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Three checks that look like they passed, but validated nothing

#postgres #devops #backup #linux
2
Comments 12
5 min read
My Backup Exited 0 for Three Weeks and Nothing Paged Me
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My Backup Exited 0 for Three Weeks and Nothing Paged Me

#backup #monitoring #devops #linux
1
Comments 48
5 min read
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