Apache Cassandra

Website

cassandra.apache.org

Categories

#Databases #NoSQL Databases #Relational Databases #Big Data

MarkLogic Server

Website

marklogic.com

Categories

#Network & Admin #Databases #NoSQL Databases #Relational Databases

Apache Cassandra features and specs

• Scalability
  Apache Cassandra is designed for linear scalability and can handle large volumes of data across many commodity servers without a single point of failure.
• High Availability
  Cassandra ensures high availability by replicating data across multiple nodes. Even if some nodes fail, the system remains operational.
• Performance
  It provides fast writes and reads by using a peer-to-peer architecture, making it highly suitable for applications requiring quick data access.
• Flexible Data Model
  Cassandra supports a flexible schema, allowing users to add new columns to a table at any time, making it adaptable for various use cases.
• Geographical Distribution
  Data can be distributed across multiple data centers, ensuring low-latency access for geographically distributed users.
• No Single Point of Failure
  Its decentralized nature ensures there is no single point of failure, which enhances resilience and fault-tolerance.

Possible disadvantages of Apache Cassandra

• Complexity
  Managing and configuring Cassandra can be complex, requiring specialized knowledge and skills for optimal performance.
• Eventual Consistency
  Cassandra follows an eventual consistency model, meaning that there might be a delay before all nodes have the latest data, which may not be suitable for all use cases.
• Write-heavy Operations
  Although Cassandra handles writes efficiently, write-heavy workloads can lead to compaction issues and increased read latency.
• Limited Query Capabilities
  Cassandra's query capabilities are relatively limited compared to traditional RDBMS, lacking support for complex joins and aggregations.
• Maintenance Overhead
  Regular maintenance tasks such as node repair and compaction are necessary to ensure optimal performance, adding to the administrative overhead.
• Tooling and Ecosystem
  While the ecosystem for Cassandra is growing, it is still not as extensive or mature as those for some other database technologies.

MarkLogic Server features and specs

• Multi-Model Database
  MarkLogic Server is a multi-model database that supports documents, graphs, and relational data, allowing for versatility in storing and managing various data types.
• Enterprise Features
  Includes enterprise-grade features such as ACID transactions, built-in search capability, scalability, high availability, and disaster recovery.
• Security
  Offers advanced security controls including role-based access, encryption, and auditing, which are crucial for handling sensitive and regulated data.
• Integrated Search
  Provides powerful search capabilities out-of-the-box, which can index and search text, structure, and metadata across all data types efficiently.
• Data Integration
  Facilitates data integration from multiple sources, supporting seamless interoperability and operational data hubs, which is beneficial for complex data environments.

Possible disadvantages of MarkLogic Server

• Complexity and Learning Curve
  While rich in features, it may have a steep learning curve for new users, which could lead to a longer setup and training time.
• Cost
  Can be expensive, especially for smaller organizations, as it comes with licensing costs typical of enterprise-grade software.
• Vendor Lock-in
  Using a proprietary database like MarkLogic can create risks of vendor lock-in, potentially complicating data migrations to other platforms if needed.
• Limited Community Support
  Compared to open-source alternatives, there might be less community support available, which can be a drawback for troubleshooting or finding resources.
• Performance Overhead
  Due to its extensive feature set, there can be performance overhead, requiring careful management and optimal configuration to achieve desired performance.

Course Intro | DS101: Introduction to Apache Cassandra™

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