SmartStackWhat is SmartStack?
Scaling a web infrastructure requires services, and building a service-oriented infrastructure is hard. Make it EASY, with SmartStack’s automated, transparent service discovery and registration: cruise control for your distributed infrastructure.
SmartStack is a tool in the API Tools category of a tech stack.
Key Features
Within a health check interval’s delay of a backend becoming healthy, it is made available in Zookeeperthis makes it instantly available to consumers via Synapse’s Zookeeper watches.We detect problems within a health check interval, and take backends out of rotation. A mechanism which allows services to notify Nerve that they’re not healthy is planned, to reduce the interval further. In the meantime, deploys can stop Nerve when they start, and then re-start it at the end.Synapse acts on information the moment it’s published in Zookeeper, and reconfiguring HAProxy is very very fast most of the time. Because we utilize HAProxy’s stats socket for many changes, we don’t even restart the process unless we have to add new backends.Because our infrastructure is distributed, we cannot do centralized planning. But HAProxy provides very configurable queueing semantics. For our biggest clients, we set up intelligent queueing at the HAProxy layerfor others, we at least guarantee round-robin.Doing debugging or maintenance on a backend is as simple as stopping the Nerve process on the machinenothing else is affected!You can see exactly which backends are available simply by looking at the HAProxy status page. Because of HAProxy’s excellent log output, you also get amazing aggregate and per-request information, including statistics on number of behavior of requests right in rsyslog.The infrastructure is completely distributed. The most critical nodes are the Zookeeper nodes, and Zookeeper is specifically designed to be distributed and robust against failure.
SmartStack Pros & Cons
Pros of SmartStack
- ✓Elegant and powerful
Cons of SmartStack
No cons listed yet.
SmartStack Alternatives & Comparisons
What are some alternatives to SmartStack?
Consul
Consul is a tool for service discovery and configuration. Consul is distributed, highly available, and extremely scalable.
Zookeeper
A centralized service for maintaining configuration information, naming, providing distributed synchronization, and providing group services. All of these kinds of services are used in some form or another by distributed applications.
etcd
etcd is a distributed key value store that provides a reliable way to store data across a cluster of machines. It’s open-source and available on GitHub. etcd gracefully handles master elections during network partitions and will tolerate machine failure, including the master.
Eureka
Eureka is a REST (Representational State Transfer) based service that is primarily used in the AWS cloud for locating services for the purpose of load balancing and failover of middle-tier servers.
