Add traceid to the project log

Add... To the log traceid

traceid What is it? ？

• What I'm talking about here traceid It refers to adding the same to every log after the server receives the client request and returns the result to the client traceid To track the whole process from request to return .

Why add traceid?

• Recently, I am going to add traceid. This facilitates the server gateway to track the entire requested link after receiving the request and before returning to the client . It is convenient to check online bug And the performance bottleneck of statistical query requests .
• Add one traceid, It's not difficult for a new project , But for a project that has been mature and launched , There are still many things to pay attention to .
• At present, our online project adopts the idea of microservice : In the project, the relatively independent parts of the function are separated into processes . Facilitate rapid iteration of services , Rapid deployment and partial updates . In fact, such a splitting effect is quite obvious , The hot update can be achieved without stopping the service if the functions are required , Greatly reduced maintenance costs , Improved user experience .

How to design traceid?

• Here is the traceid Divide into 4 Parts of :
  • User related uid
  • Message related msgid
  • Incremental or unique tid
  • Time related timestamp timestamp
• User uid Needless to say , It is convenient to identify which user is related to this business .
• news msgid It is convenient to locate the business .
• tid In order to ensure traceid Uniqueness .
• Timestamp is convenient to count the time consumed from request to return , At the same time, the time consumed can be calculated after each further step .

traceid Whether it is possible to transmit the business through ？

• At present, for online business structure , Can't get through . Only through between nodes 、 Pass parameters between function calls traceid How to use traceid, This is the simplest and most cumbersome scheme . But it's quite practical , Be able to solve problems . At present, let each node support traceid Link tracking , It will be optimized later .

summary

• traceid The addition of is still in progress , At present, the link log printing of some nodes has been completed . The statistics of link time consumption will be added later . Here is the first record . I will use traceid Let's count each api Time consuming to call .