Couchbase

couchbase database
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About

Apache Couchbase is an open-source, distributed, NoSQL document-oriented database management system. It’s designed to store, manage, and retrieve data in flexible JSON-like documents. Couchbase is suitable for a wide range of use cases, from web and mobile applications to real-time analytics and caching layers. Its combination of performance, scalability, flexibility, and robust features makes it a compelling choice for organizations looking to modernize their data infrastructure.

Couchbase is a distributed NoSQL database management designed to deliver high performance, scalability, and flexibility while managing large volumes of data. It combines key-value and document-oriented database functionalities to optimize the storage and retrieval of unstructured data. The Couchbase memory-first architecture focuses on in-memory storage over server storage to improve the response rate for production applications.

Architecture

  1. Cluster Architecture: Couchbase operates in clusters, where each node can serve multiple roles (data, index, query, search, etc.).
  2. Data Storage: Data is stored as documents in a bucket, which is a logical container.
  3. Memory-First Architecture: Data is primarily stored in RAM for quick access, with persistent storage used for durability.
  4. Data Partitioning: Couchbase uses a technique called “sharding” to distribute data across nodes for load balancing.
  5. Replication: It supports multiple replicas of data to ensure availability and reliability.

Key Features

  1. Document-Oriented: Couchbase stores data in JSON format, allowing for flexible schemas and easy storage of complex data structures.
  2. Key-Value Store: It can be accessed like a key-value store, making it efficient for high-speed lookups.
  3. Scalability: Couchbase is designed to scale horizontally, allowing you to add more nodes easily to handle increased load.
  4. High Performance: It uses an in-memory architecture to speed up data access and reduce latency.
  5. Global Distribution: Couchbase supports cross datacenter replication (XDCR), making it suitable for globally distributed applications.
  6. Flexible Querying: It supports N1QL, a SQL-like query language for JSON, allowing for complex queries and analytics.
  7. Full-Text Search: Couchbase includes integrated full-text search capabilities.
  8. Eventing: You can create triggers based on document changes, enabling reactive programming.
  9. Mobile Support: Couchbase Mobile extends Couchbase capabilities to mobile devices with synchronization features.

You can subscribe to Couchbase, an AWS Marketplace product and launch an instance from the product’s AMI using the Amazon EC2 launch wizard.

To launch an instance from the AWS Marketplace using the launch wizard

  • Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/
  • From the Amazon EC2 dashboard, choose Launch Instance. On the Choose an Amazon Machine Image (AMI) page, choose the AWS Marketplace category on the left. Find a suitable AMI by browsing the categories, or using the search functionality. Choose Select to choose your product.
  • A dialog displays an overview of the product you’ve selected. You can view the pricing information, as well as any other information that the vendor has provided. When you’re ready, choose Continue.
  • On the Choose an Instance Type page, select the hardware configuration and size of the instance to launch. When you’re done, choose Next: Configure Instance Details.
  • On the next pages of the wizard, you can configure your instance, add storage, and add tags. For more information about the different options you can configure, see Launching an Instance. Choose Next until you reach the Configure Security Group page.
  • The wizard creates a new security group according to the vendor’s specifications for the product. The security group may include rules that allow all IP addresses (0.0.0.0/0) access on SSH (port 22) on Linux or RDP (port 3389) on Windows. We recommend that you adjust these rules to allow only a specific address or range of addresses to access your instance over those ports
  • When you are ready, choose Review and Launch.
  • On the Review Instance Launch page, check the details of the AMI from which you’re about to launch the instance, as well as the other configuration details you set up in the wizard. When you’re ready, choose Launch to select or create a key pair, and launch your instance.
  • Depending on the product you’ve subscribed to, the instance may take a few minutes or more to launch. You are first subscribed to the product before your instance can launch. If there are any problems with your credit card details, you will be asked to update your account details. When the launch confirmation page displays.

Usage/Deployment Instructions

Step 1: SSH into Your Instance: Use the SSH command with the username ubuntu and the appropriate key pair to start the applications.

Username: ubuntu

ssh -i path/to/ssh_key.pem ubuntu@instance-IP

Replace path/to/ssh_key.pem with the path to your SSH key file and instance-IP with the public IP address of your instance.

Step 2: You can check the status of CouchBase using the following command:

systemctl status couchbase-server

Step 3: At this point, the CouchBase server is installed and listens on port 8091. You can check it using the following command:

ss -antpl | grep 8091

Step 4: Now, open your web browser and access the CouchBase web interface using the URL  http://your-IP-address:8091. You will see the CouchBase dashboard on the following screen.

Click Setup New Cluster.

Step 5: Define your cluster name, admin username, and password, and click on Next.

Step 6: You will see the following screen. Accept the term and click on Finish with Defaults

Step 7:  You will see the Couchbase dashboard on the following screen.

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    Database management software can help you create and manage your databases so you can easily capture and analyze data. This easily accessible data often leads to greater business insight, helping you refine your data-driven efforts.

    These things vary on the sizing/number of the application transactions and/or hardware considerations for the database. For more details on this you need to request for Database Planning with our support team.

    For Databases, a database administrator requires the following skill set: Database monitoring, sound knowledge of database architecture, re-organization, backups and recovery, jobs, batch scripting, performance tuning, database routines, database internals and trouble shooting.

    In a rough sense, it is similar to the Post-Triggers of the database world. But with functions, the action is already completed at the data-layer, and the event handler just gives an interface by which developers can key in the logic of what needs to happen ‘after’ the action is done. What a function sees is the actual event of the change, and hence it does not directly correlate with Database Triggers.

    It totally depends on the application interface that you are using. These are some following ways,

    • You can verify only from the front-end when application interface shows view functionality of the data you enter. Mainly, Black box test engineers do this functionality verification test in this way.
    • If application interface doesn’t provide view functionality of the data you enter, then you can check for database update by using relevant SQL/Oracle query.

    It is a process of analyzing the given relation schemas based on their functional dependencies and primary keys to achieve the following desirable properties:

    1. Minimizing Redundancy
    2. Minimizing the Insertion, Deletion, And Update Anomalies

    Relation schemas that do not meet the properties are decomposed into smaller relation schemas that could meet desirable properties.

    Highlights

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      User Profile Management

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      Flexibility and Scalability

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      Rich Querying Capabilities

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      Real-time data access

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      Memory-First Architecture

    Application Installed

    • icon Couchbase database