Datomic VS BT

• 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

• 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.

• Extensive Network Coverage
  BT offers widespread network coverage across the UK, ensuring strong connectivity in most urban and rural areas.
• Diverse Service Offerings
  BT provides a range of services, including broadband, mobile, and TV packages, catering to various customer needs.
• Customer Support
  BT offers comprehensive customer support with multiple channels such as online, phone, and in-store assistance.
• Bundled Packages
  BT offers competitive bundled packages that can save customers money by combining services like TV, broadband, and phone.

Possible disadvantages

• Pricing
  BT's pricing can be higher compared to some competitors, making it less attractive for budget-conscious consumers.
• Contract Length
  BT often requires long-term contracts, which may not be suitable for customers who prefer flexibility.
• Customer Service Delays
  Some customers have reported delays in customer service response times and resolution of issues.
• Installation Fees
  BT may charge installation fees, which can add to the overall cost of starting a new service.

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

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