Monitoring microservices lightning ddd north 20171014
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This document discusses monitoring microservices and distributed systems. It identifies that monitoring should focus on business capabilities, applications, and infrastructure. Effective monitoring considers capacity, performance, health, and takes a proactive, reactive, and passive approach. When systems become distributed, it is important to monitor message queues and the time it takes for messages to be processed across multiple servers and processes. Distributed systems are built for failure, so all aspects of the system need to be monitored.
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Monitoring microservices lightning ddd north 20171014
- 1. @farmar Monitoring Microservices Sean Farmar Particular Software 1
- 2. An average production system @farmar2 Databas e • Is the web server up? • Is the database up? • Can the webserver talk to the db?
- 3. What are you actually monitoring? @farmar3 Business Capability Application Infrastructure Are my servers running? Is my application process running? Can users access the system?
- 4. What are you actually monitoring? @farmar4 Business Capability Application Infrastructure Is my application generating exceptions? How quickly is my system processing messages? Can I handle month end batch jobs? Is the server up? Is there high CPU? Do I have enough disk space? Application Infrastructure Can users access the system? Are we meeting our SLAs? What is the impact of adding another customer? Business Capability
- 5. Monitoring Aspects @farmar5 Business Capability Application Infrastructure Capacity Performance Health Proactive Reactive Passive Monitoring Area Monitoring Concern Interaction Type
- 6. Going Distributed – Phase 1 @farmar6
- 7. Going Distributed – Phase 2 @farmar7
- 8. Monitoring distributed systems Multiple processes, servers and queues We want to monitor the time it takes for a message to be processed We need to monitor the message queues @farmar8
- 9. Monitoring distributed systems Turn the lights on… Distributed system is built for failure After you covered the basics get the other aspects of monitoring covered @farmar9
- 10. Monitoring Aspects @farmar10 Business Capability Application Infrastructure Capacity Performance Health Proactive Reactive Passive Monitoring Area Monitoring Concern Interaction Type
Editor's Notes
- So let’s look at a simple scenario We have a layered architecture with a tiered deployment and we have a high I/O operation like sending emails. We want to move the email functionality to it’s own components (service) -> so we can send a message from our business logic code -> in an asynchronous fire and forget operation to improve performance. -> Next, let’s do the same for our PDF convertor functionality. -> Now we can go on and add an integration with our CRM, synchronising events from our business logic code and our CRM system using publish subscribe.
- So from a layered architecture with a tiered deployment having a web tier and a database tier, we now have a much more distributed system, a couple of processes and servers talking to each other using queues and messaging. We also introduced publish subscribe for integration with our CRM. We can see here a microservices style deployment where by each service has it’s own database. Regardless of the physical deployment, you want to monitor all the different component of the system and the flow between them.
- So now we have distributed our system. We added a couple of processes. And we added a queuing mechanism. There are certain elements of queues and messaging that should be monitored, these element are different from a traditional web based environment using http/rest messages. We want to monitor the time it takes for a message to be processed end to end, we have a couple of metrics we can look at.