Datomic

Website

datomic.com

Pricing URL

Official Datomic Pricing

Categories

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

Oracle TimesTen

Website

facebook.com

Pricing URL

-

Categories

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

Datomic features and specs

• Immutability
  Datomic employs an append-only data model where data is never overwritten but instead appended, ensuring historical data is always available and providing strong consistency.
• Time Travel Queries
  Datomic allows you to query the database as of any point in time, facilitating auditing and debugging by allowing easy access to historical data states.
• Rich Data Model
  Supports complex data types like maps and sets directly within its schema, providing a flexible way to represent data.
• ACID Transactions
  Datomic supports fully ACID-compliant transactions, ensuring reliable and predictable database operations.
• Scalability
  Separates storage and compute, allowing for horizontal scaling of read operations, making it suitable for handling large datasets.
• Query Flexibility
  Offers a powerful query language that supports recursive queries, making it suitable for complex data retrieval needs.

Possible disadvantages of Datomic

• Complexity
  The architecture of Datomic can be complex to understand and implement, particularly for teams unfamiliar with its design principles.
• Cost
  Can be expensive to operate, especially in a cloud environment, where costs increase with the amount of data stored and the compute resources required.
• Limited Write Throughput
  Due to its append-only design, Datomic can have limited write throughput, which may not be suitable for applications with heavy write requirements.
• Closed Source
  Datomic is a proprietary database system, which may not appeal to organizations that prefer open-source solutions.
• Learning Curve
  Requires a learning curve as its conceptual model and query language are different from traditional databases, potentially requiring additional training.
• Dependency on AWS
  Relying on AWS ecosystem for the storage backend can limit choices for deployment environments, impacting flexibility.

Oracle TimesTen features and specs

• High Performance
  Oracle TimesTen is an in-memory database providing extremely fast data access and transaction processing, which is beneficial for applications that require real-time performance.
• Low Latency
  Since the database is stored in memory, data retrieval and manipulation are very quick, reducing latency significantly compared to disk-based databases.
• Scalability
  TimesTen can be easily scaled to handle large volumes of data and transaction loads, supporting hybrid configurations with Oracle Database to extend scalability and reliability.
• SQL Compatibility
  It supports SQL and PL/SQL, making it easier for developers experienced with Oracle databases to use TimesTen without a steep learning curve.
• High Availability
  TimesTen offers features like replication and failover for high availability which is crucial for mission-critical applications.
• Integration with Oracle Ecosystem
  TimesTen integrates well with other tools and products in the Oracle ecosystem, allowing for seamless operations across different Oracle platforms.

Possible disadvantages of Oracle TimesTen

• Cost
  Oracle TimesTen can be expensive compared to some of its open-source alternatives, making it less attractive for smaller businesses or projects with limited budgets.
• Hardware Dependency
  Being an in-memory database, it requires machines with large RAM capacities to store substantial datasets, which can be a limiting factor.
• Complexity
  Setting up and managing TimesTen can be complex, especially when trying to optimize for performance and ensure data consistency across systems.
• Limited Community Support
  Unlike more popular database systems, the community support for TimesTen is limited, which means troubleshooting and problem-solving might not be as straightforward.
• Data Volatility
  Since TimesTen stores data in memory, there’s a risk of data loss in the event of power failures, despite having persistence features to mitigate this risk.

KotlinConf 2018 - Datomic: The Most Innovative DB You've Never Heard Of by August Lilleaas

More videos:

My demo of Oracle TimesTen in memory DB with Free Developer Day tools with a VirtualBox VM appliance