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Use the crawling skeleton methodology to successfully build microservices

M
MessageMedia

The document outlines the Crawling Skeleton methodology for building microservices, emphasizing its ability to reduce complexity and fragility while enhancing stakeholder confidence and delivery speed. It employs a DevOps framework with three phases of implementation and highlights the importance of asynchronous communication, feedback loops, and iterative processes. Key learnings include the benefits of queues, dead letter queues for recovery, and transaction IDs for traceability.

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Use the crawling skeleton methodology to successfully build microservices Ben Mostafa
Microservices can be complex and fragile. The crawling skeleton methodology will help mitigate these risks early.
Reduce complexity and fragility of your system Maintain stakeholder confidence throughout development Increase speed and quality of delivery Your microservices platform
Who is MessageMedia? Number one provider of business messaging solutions 1.8 billion messages
Ben Mostafa Engineering Manager & Head of Developer Relations
A methodology based on DevOps principals Flow Always seeking to increase flow Feedback Shorten & amplify feedback loops Learning & Experimentation Repetition & Practice
Three phases of implementation Crawling Walking Running
Step 1: Stack and communication methods Synchronous – HTTP Easier to implement Typically better for maintaining transactional integrity Asynchronous – Queues Typically more fault tolerant Better at dealing with spikes in traffic
Step 2: Create your first bone!
Step 3: Add load and analyse
Step 4: Wire up your crawling skeleton!
Step 5: Add load and analyse
skb rides the rocket – wtf?! [31333817.179933] xennet: skb rides the rocket: 19 slots [31334587.454365] xennet: skb rides the rocket: 21 slots [31334772.157791] xennet: skb rides the rocket: 20 slots [31335254.431489] xennet: skb rides the rocket: 19 slots [31336785.643018] xennet: skb rides the rocket: 19 slots [31337438.686311] xennet: skb rides the rocket: 21 slots eth0 Link encap:Ethernet HWaddr 0e:cd:f0:69:b1:29 inet addr:10.0.7.254 Bcast:10.0.7.255 Mask:255.255.255.0 inet6 addr: fe80::ccd:f0ff:fe69:b129/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1913740 errors:0 dropped:0 overruns:0 frame:0 TX packets:1619310 errors:0 dropped:6 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1196646593 (1.1 GB) TX bytes:234005040 (234.0 MB) Interrupt:48
Step 6: Teach your skeleton to walk!
Step 7: Add load and analyse
Step 8: Teach your skeleton how to run!
Key Learnings Queues are worth the effort Dead letter queues are great for recovery Use an event stream Unknown unknowns Transaction IDs are great for traceability
Mitigate complexity and fragility early Methodology based on DevOps Create bone, add meat, make run
Stay in touch! linkedin.com/in/ben-mostafa developers@messagemedia.com.au developers.messagemedia.com/collaborate/slack/

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Use the crawling skeleton methodology to successfully build microservices

  • 1. Use the crawling skeleton methodology to successfully build microservices Ben Mostafa
  • 2. Microservices can be complex and fragile. The crawling skeleton methodology will help mitigate these risks early.
  • 3. Reduce complexity and fragility of your system Maintain stakeholder confidence throughout development Increase speed and quality of delivery Your microservices platform
  • 4. Who is MessageMedia? Number one provider of business messaging solutions 1.8 billion messages
  • 5. Ben Mostafa Engineering Manager & Head of Developer Relations
  • 6. A methodology based on DevOps principals Flow Always seeking to increase flow Feedback Shorten & amplify feedback loops Learning & Experimentation Repetition & Practice
  • 7. Three phases of implementation Crawling Walking Running
  • 8. Step 1: Stack and communication methods Synchronous – HTTP Easier to implement Typically better for maintaining transactional integrity Asynchronous – Queues Typically more fault tolerant Better at dealing with spikes in traffic
  • 9. Step 2: Create your first bone!
  • 10. Step 3: Add load and analyse
  • 11. Step 4: Wire up your crawling skeleton!
  • 12. Step 5: Add load and analyse
  • 13. skb rides the rocket – wtf?! [31333817.179933] xennet: skb rides the rocket: 19 slots [31334587.454365] xennet: skb rides the rocket: 21 slots [31334772.157791] xennet: skb rides the rocket: 20 slots [31335254.431489] xennet: skb rides the rocket: 19 slots [31336785.643018] xennet: skb rides the rocket: 19 slots [31337438.686311] xennet: skb rides the rocket: 21 slots eth0 Link encap:Ethernet HWaddr 0e:cd:f0:69:b1:29 inet addr:10.0.7.254 Bcast:10.0.7.255 Mask:255.255.255.0 inet6 addr: fe80::ccd:f0ff:fe69:b129/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1913740 errors:0 dropped:0 overruns:0 frame:0 TX packets:1619310 errors:0 dropped:6 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1196646593 (1.1 GB) TX bytes:234005040 (234.0 MB) Interrupt:48
  • 14. Step 6: Teach your skeleton to walk!
  • 15. Step 7: Add load and analyse
  • 16. Step 8: Teach your skeleton how to run!
  • 17. Key Learnings Queues are worth the effort Dead letter queues are great for recovery Use an event stream Unknown unknowns Transaction IDs are great for traceability
  • 18. Mitigate complexity and fragility early Methodology based on DevOps Create bone, add meat, make run