Eureka vs Zookeeper: What are the differences?
What is Eureka? AWS Service registry for resilient mid-tier load balancing and failover. 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.
What is Zookeeper? Because coordinating distributed systems is a Zoo. 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.
Eureka and Zookeeper can be primarily classified as "Open Source Service Discovery" tools.
"Easy setup and integration with spring-cloud " is the primary reason why developers consider Eureka over the competitors, whereas "High performance ,easy to generate node specific config" was stated as the key factor in picking Zookeeper.
Eureka is an open source tool with 7.98K GitHub stars and 2.2K GitHub forks. Here's a link to Eureka's open source repository on GitHub.
Uber Technologies, Pinterest, and Shopify are some of the popular companies that use Zookeeper, whereas Eureka is used by Notify-e, Swingvy, and LabNetwork. Zookeeper has a broader approval, being mentioned in 116 company stacks & 48 developers stacks; compared to Eureka, which is listed in 7 company stacks and 14 developer stacks.
What is Eureka?
What is Zookeeper?
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What are the cons of using Eureka?
What are the cons of using Zookeeper?
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Initially, Stitch only supported real-time updates and addressed this problem with a MapReduce job named The Restorator that performed the following actions:
- Calculated the expected totals
- Queried Cassandra to get the values it had for each counter
- Calculated the increments needed to apply to fix the counters
- Applied the increments
Meanwhile, to stop the sand shifting under its feet, The Restorator needed to coordinate a locking system between itself and the real-time processors, so that the processors did not try to simultaneously apply increments to the same counter, resulting in a race-condition. It used ZooKeeper for this.
Like many large scale web sites, Pinterest’s infrastructure consists of servers that communicate with backend services composed of a number of individual servers for managing load and fault tolerance. Ideally, we’d like the configuration to reflect only the active hosts, so clients don’t need to deal with bad hosts as often. ZooKeeper provides a well known pattern to solve this problem.
Zookeeper manages our state, and tells each node what version of code it should be running.
Used Zookeeper as the resource management system for Mesos/Marathon services.