#447 Going down a rat hole

Topics covered in this episode:

• * rathole*
• * pre-commit: install with uv*
• A good example of what functools.Placeholder from Python 3.14 allows
• Converted 160 old blog posts with AI
• Extras
• Joke

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Michael #1: rathole

• A lightweight and high-performance reverse proxy for NAT traversal, written in Rust. An alternative to frp and ngrok.
• Features
  • High Performance Much higher throughput can be achieved than frp, and more stable when handling a large volume of connections.
  • Low Resource Consumption Consumes much fewer memory than similar tools. See Benchmark. The binary can be as small as ~500KiB to fit the constraints of devices, like embedded devices as routers.
    • On my server, it’s currently using about 2.7MB in Docker (wow!)
  • Security Tokens of services are mandatory and service-wise. The server and clients are responsible for their own configs. With the optional Noise Protocol, encryption can be configured at ease. No need to create a self-signed certificate! TLS is also supported.
  • Hot Reload Services can be added or removed dynamically by hot-reloading the configuration file. HTTP API is WIP.

Brian #2: pre-commit: install with uv

• Adam Johnson
• pre-commit doesn’t natively support uv, but you can get around that with pre-commit-uv
• $ uv tool install pre-commit --with pre-commit-uv
• Installing pre-commit like this
  • Installs it globally
  • Installs with uv
  • adds an extra plugin “pre-commit-uv” to pre-commit, so that any Python based tool installed via pre-commit also uses uv
• Very cool. Nice speedup

Brian #3: A good example of what functools.Placeholder from Python 3.14 allows

• Rodrigo Girão Serrão
• Remove punctuation functionally
• Also How to use functools.Placeholder, a blog post about it.
• functools.partial is cool way to create a new function that partially binds some parameters to another function.
• It doesn’t always work for functions that take positional arguments.
• functools.Placeholder fixes that with the ability to put in placeholders for spots where you want to be able to pass that in from the oute