In go-ethereum project, there is a small module golang ecosystem in some excellent tools package, due to the simple function, a chapter alone far too thin. However, because Ethereum's packaging of these gadgets is very elegant, it has strong independence and practicality. We do some analysis here, at least for the familiarity with the encoding of the Ethereum source code.
In ethdb-analysis, we saw the encapsulation of thegoleveldbproject. Ethdb abstracts a layer on goleveldb.
In order to support the use of the same interface with MemDatabase, it also uses a lot of probe tools under the gometrics package in LDBDatabase , and can start a goroutine execution.
Collect the delay and I/O data volume in the goleveldb process in a 3-second cycle. It seems convenient, but the question is how do we use the information we collect?
Golang's built-in log package has always been used as a slot, and the Ethereum project is no exception. Therefore log15 was introduced to solve the problem of inconvenient log usage.