Toa

Runtime for low code eventually consistent distributed systems.

Status

The project is under heavy development, while being used in production by its authors. Non-scattered documentation is coming this fall.

Features

Runtime

• Interservice communications
  • Reliable RPC and Events (ComQ)
  • Flow control
  • Eventual consistency guarantee (not yet)
  • Uniform interface
    • Input/query segregation
    • Successful rejections
    • Distributed exception handling
  • Transparent service discovery
  • Multi-protocol transmission
    • built-in support for AMQP and HTTP
  • In-memory communications
  • Messages validation
• Persistent state management
  • Concurrency control
  • Batching
  • Data validation
  • Built-in implementations
    • MongoDB
    • SQL (Knex)
• Telemetry
  • Structured logs
• Configuration with secrets
• API Gateway
  • Resource discovery
  • Identity
  • Access control
  • Cache control
  • File uploads, downloads, and processing.
• Realtime events
• BLOB storage
  • MIME type detection and validation
  • Deduplication
  • Arbitrary orderings
  • Providers: file system, Amazon S3
• Transient state
• External communications governance
  • HTTP
  • AMQP

Development

• Language interoperability
  • Node.js
  • Bash
• Service prototyping (inheritance)
  • Generic prototype
• Data and operations contracts
• Declarative API Gateway endpoints with authorization policies
• Integration tests SDK
• Runtime bootloader API
• Development environment configuration
• CLI
• Extensibility:
  • Persistent storages
  • Communication protocols
  • Runtime core abstractions
  • Arbitrary services

Operations

• Standalone infrastructure configuration
• Multi-environment configuration
• Components distribution across containers
• One-command fully automated deployment
  • Preset multi-arch docker images
  • Helm deployment to kubernetes
• CLI utilities
  • Secrets management
  • Remote Container Shell