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Mastering Distributed Tracing
book

Mastering Distributed Tracing

by Yuri Shkuro
February 2019
Intermediate to advanced content levelIntermediate to advanced
444 pages
11h 36m
English
Packt Publishing
Content preview from Mastering Distributed Tracing

Identifying sources of latency

So far, we have not discussed the performance characteristics of the HotROD application. If we refer to Figure 2.6, we can easily make the following conclusions:

  1. The call to the customer service is on the critical path because no other work can be done until we get back the customer data that includes the location to which we need to dispatch the car.
  2. The driver service retrieves N nearest drivers given the customer's location and then queries Redis for each driver's data in a sequence, which can be seen in the staircase pattern of Redis GetDriver spans. If these operations can be done in parallel, the overall latency can be reduced by almost 200ms.
  3. The calls to the route service are not sequential, but not fully parallel ...
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Publisher Resources

ISBN: 9781788628464Supplemental Content