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【Redis】数据类型（Data Types）
Strings
Strings are the most basic kind of Redis value. Redis Strings are binary safe, this means that a Redis string can contain any kind of data, for instance a JPEG image or a serialized Ruby object.
A String value can be at max 512 Megabytes in length.
You can do a number of interesting things using strings in Redis, for instance you can:
- Use Strings as atomic counters using commands in the INCR family: INCR, DECR, INCRBY.
- Append to strings with the APPEND command.
- Use Strings as a random access vectors with GETRANGE and SETRANGE.
- Encode a lot of data in little space, or create a Redis backed Bloom Filter using GETBIT and SETBIT.
【Hackintosh】USB Mapping
Update!!
Use https://github.com/USBToolBox/tool instead to get the mapping
Refer to https://www.youtube.com/watch?v=WKJ3MeCXdVA
USB Map
Refer to https://dortania.github.io/OpenCore-Post-Install/usb/#macos-and-the-15-port-limit
So the process of USB mapping is defining your ports to macOS and telling it what kind they are, the reasons we want to do this are:
- macOS is very bad at guessing what kind of ports you have
- Some ports may run below their rated speed(3.1 ports running at 2.0)
- Some ports may outright not work
- Bluetooth not working
- Certain services like Handoff may not work correctly
- Sleep may break
- Broken Hot-Plug
- Even data corruption from
XhciPortLimit
【Engineering】Buffer
Data Buffer
In computer science, a data buffer (or just buffer) is a region of a physical memory storage used to temporarily store data while it is being moved from one place to another. Typically, the data is stored in a buffer as it is retrieved from an input device (such as a microphone) or just before it is sent to an output device (such as speakers). However, a buffer may be used when moving data between processes within a computer.
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