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Cache 和 Buffer 都是缓存,主要区别是什么? - 知乎
Buffer的核心作用是用来缓冲,字面意思缓慢冲击。 比如你每秒要写100次硬盘,对系统冲击很大,浪费了大量时间忙着写处理,用个buffer缓冲区暂存起来,变成每秒要写10次硬盘,对系统 …
terminology - What does it mean by buffer? - Stack Overflow
Here, the buffer array is used to store the data read by read (2) until it's written; then the buffer is re-used. There are more complicated buffer schemes used, for example a circular buffer, …
Convert a JSON Object to Buffer and Buffer to JSON Object back
Jan 31, 2017 · I have a JSON object and I'm converting it to a Buffer and doing some process here. Later I want to convert the same buffer data to convert to valid JSON object. I'm working …
What is the difference between buffer and cache memory in Linux?
Buffers are associated with a specific block device, and cover caching of filesystem metadata as well as tracking in-flight pages. The cache only contains parked file data. That is, the buffers …
Node.js: How to read a stream into a buffer? - Stack Overflow
Jan 11, 2013 · I wrote a pretty simple function that downloads an image from a given URL, resize it and upload to S3 (using 'gm' and 'knox'), I have no idea if I'm doing the reading of a stream to …
What is the Python 'buffer' type for? - Stack Overflow
The buffer in this case is a sub-string, starting at position 6 with length 5, and it doesn't take extra storage space - it references a slice of the string. This isn't very useful for short strings like this, …
How can I do Base64 encoding in Node.js? - Stack Overflow
The Buffer constructor is a global object, so no require is needed. Buffers created with strings can take an optional encoding parameter to specify what encoding the string is in.
How to determine the size of an allocated C buffer? [duplicate]
May 17, 2012 · Since buffer is a pointer (not an array), the sizeof operator returns the size of a pointer, not the size of the buffer it points to. There is no standard way to determine this size, …
ORA-06502: PL/SQL: numeric or value error: character string …
PL/SQL: numeric or value error: character string buffer too small is due to the fact that you declare a string to be of a fixed length (say 20), and at some point in your code you assign it a value …
Javascript - How to convert buffer to a string? - Stack Overflow
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