Shallow chat link tracking

In the microservice construction of large-scale system , A system is broken down into many modules . These modules are responsible for different functions , Combine into a system , Finally, it can provide rich functions . In this architecture , A request often involves multiple services . Internet applications are built on different sets of software modules , These software modules , It could have been developed by different teams 、 It may be implemented in different programming languages 、 Maybe it's distributed on thousands of servers , Across multiple data centers , It means that there will be some problems with this kind of architecture ：

How to find problems quickly ？

How to determine the fault scope ？

How to sort out service dependency and its rationality ？

How to analyze link performance and real-time capacity planning ？

Distributed Link Tracking （Distributed Tracing）, It is to restore a distributed request to a call link , Logging , Performance monitoring and centralized display of a distributed request call . For example, the time spent on each service node 、 Which machine does the request go to 、 The request status of each service node and so on .

Common link tracking techniques include the following ：

cat

Open source by public comments , be based on Java Developed real-time application monitoring platform , Including real-time application monitoring , Business monitoring . Integrate The scheme is to realize the monitoring by means of code embedding point , such as ： Interceptor , Filters, etc. . It's very intrusive to code , Integration costs are high . Risk is bigger .

zipkin

from Twitter The company open source , Open source distributed tracking system , Timing data used to collect Services , To solve micro The delay problem in service architecture , Include ： Data collection 、 Storage 、 Find and show . The product combines spring-cloud-sleuth Easy to use , Easy integration , But the function is simpler .

pinpoint

Pinpoint It is a Korean open source call chain analysis based on bytecode injection , And the application of monitoring and analysis tools . The feature is that it supports a variety of plug-ins ,UI Powerful , There is no code intrusion at the access end .

skywalking

SkyWalking It is a native open source call chain analysis based on bytecode injection , And the application of monitoring and analysis tools . It is characterized by many supports Plug in ,UI Strong function , There is no code intrusion at the access end . At present, we have joined Apache The incubator .

Sleuth

Log all nodes on each link , And the machine where these nodes are located , And time consuming .

SpringCloud

Provides a link tracking solution in distributed systems .
Be careful ：SpringCloud alibaba The technology stack does not provide its own link tracking technology , We can use Sleuth + Zinkin To do a link tracking solution