Apache Zookeeper: 두 판 사이의 차이

IT 위키
(Created page with "== Apache ZooKeeper == Apache ZooKeeper is an open-source, centralized service designed to manage configuration, naming, synchronization, and group services in distributed systems. It simplifies coordination and state management in large-scale distributed applications. === Overview === ZooKeeper provides a high-performance coordination service for distributed applications. It offers a simple and reliable mechanism to store shared configuration and state information. ==...")
 
편집 요약 없음
 
6번째 줄: 6번째 줄:


=== Key Features ===
=== Key Features ===
* **Centralized Metadata Management:** Stores and manages configuration data and metadata for distributed applications.
* '''Centralized Metadata Management''': Stores and manages configuration data and metadata for distributed applications.
* **Simple API:** Intuitive and minimalistic API for easy interaction.
* '''Simple API''': Intuitive and minimalistic API for easy interaction.
* **High Availability:** Ensures service continuity through data replication across multiple servers.
* '''High Availability''': Ensures service continuity through data replication across multiple servers.
* **Sequential Consistency:** Guarantees that all clients see updates in the same order.
* '''Sequential Consistency''': Guarantees that all clients see updates in the same order.
* **Scalability:** Efficiently handles large-scale systems.
* '''Scalability''': Efficiently handles large-scale systems.


=== Architecture ===
=== Architecture ===

2025년 1월 23일 (목) 03:18 기준 최신판

1 Apache ZooKeeper[편집 | 원본 편집]

Apache ZooKeeper is an open-source, centralized service designed to manage configuration, naming, synchronization, and group services in distributed systems. It simplifies coordination and state management in large-scale distributed applications.

1.1 Overview[편집 | 원본 편집]

ZooKeeper provides a high-performance coordination service for distributed applications. It offers a simple and reliable mechanism to store shared configuration and state information.

1.2 Key Features[편집 | 원본 편집]

  • Centralized Metadata Management: Stores and manages configuration data and metadata for distributed applications.
  • Simple API: Intuitive and minimalistic API for easy interaction.
  • High Availability: Ensures service continuity through data replication across multiple servers.
  • Sequential Consistency: Guarantees that all clients see updates in the same order.
  • Scalability: Efficiently handles large-scale systems.

1.3 Architecture[편집 | 원본 편집]

ZooKeeper’s architecture consists of the following:

  • **ZooKeeper Ensemble:** A cluster of ZooKeeper servers that work together to provide high availability and reliability.
  • **ZNode:** Hierarchical nodes used to store data. Each ZNode can hold data and child nodes.
  • **Watcher:** A mechanism that allows clients to register for notifications when a specific ZNode changes.

1.4 Use Cases[편집 | 원본 편집]

1. **Distributed Lock Management:** Prevents race conditions by managing locks across distributed systems. 2. **Leader Election:** Simplifies leader election processes in distributed systems. 3. **Configuration Management:** Dynamically manages and distributes configuration data. 4. **Service Discovery:** Tracks and provides information about active services. 5. **Cluster Management:** Monitors and coordinates the state of nodes in a cluster.

1.5 Advantages[편집 | 원본 편집]

  • Reduces complexity in distributed system coordination.
  • Strong consistency model for reliable operations.
  • Supports dynamic reconfiguration.
  • Fault-tolerant and resilient to node failures.

1.6 Disadvantages[편집 | 원본 편집]

  • Requires careful configuration and tuning for optimal performance.
  • Potential bottleneck if overused as a central hub.
  • Learning curve for implementation and operation.

1.7 Tools and Ecosystem[편집 | 원본 편집]

ZooKeeper is a critical component in many distributed system frameworks:

  • **Hadoop:** Used for coordination and configuration management.
  • **Apache Kafka:** Handles broker coordination and metadata storage.
  • **HBase:** Provides high availability and fault tolerance.
  • **Apache Storm:** Manages distributed task assignments and states.

1.8 Example Usage[편집 | 원본 편집]

Below is an example of how ZooKeeper can be used to monitor a distributed lock:

# Start ZooKeeper server
bin/zkServer.sh start

# Create a ZNode
zkCli.sh -server localhost:2181 create /my_lock "lock_data"

# Watch for changes to the ZNode
zkCli.sh -server localhost:2181 get /my_lock true

1.9 Community and Contributions[편집 | 원본 편집]

Apache ZooKeeper is actively maintained by the Apache Software Foundation. It has a vibrant community contributing to its development and improving its ecosystem.

1.10 References[편집 | 원본 편집]


1.11 External Links[편집 | 원본 편집]

1.12 See Also[편집 | 원본 편집]