1.
AirBnB Service
Autodiscovery
Stockholm Python Meetup
Jun 16, 2016

2.
About me
Ilian Iliev
Platform Engineer
ilian@lifesum.com
www.ilian.io

3.
Starting as a monolith
● Easy at the beginning
● Hard to scale later
● Hard to detach apps
● Solution?

4.
Services
● Small(er)
● “Independent”
● Talking to each other
● Easier to deploy and scale
● Is SOA the ultimate solution?

5.
New problems
● Routing traffic to the correct service
● Adding and removing new instances to the pool
● What if an instance dies?

6.
A perfect solution requirements
● Routing
● Load balancing
● Health status
● Debug single node
● Introspection
● Safe to changes in the pool
● No single point of failure

7.
Suboptimal solutions
● DNS
● Central load balancing
● In App registration/discovery

8.
Smart stack
● Nerve - service registration
● Synapse - service discovery

9.
Nerve

10.
Synapse

11.
Benefits
● Immediate discovery
● Problem are detected on small intervals
● Easy to debug
● Introspection
● Distributed infrastructure

12.
The future
● Zookeeper is still critical
● Dynamic Nerve config

13.
Questions?