Compare implementations

[tshemsedinov]

• Manual buffering https://github.com/metarhia/metalog/tree/from-impress
• Use writableBuffer https://github.com/metarhia/metalog/tree/writable-buffer-cork
• Use fs.open/write https://github.com/metarhia/metalog/tree/use-fs-open

[tshemsedinov]

For each implementation:

• Determine actual disk operation number
• Do load tests with different buffer size
• Do load tests with different fetch interval

Additional:

• See node.js sources for WritableStream
• See other loggers
• Read articles about node.js fs API and logging

[tshemsedinov]

New implementation

• Use single preallocated buffer and buf.write(string[, offset[, length]][, encoding])