TAO
A distributed graph store built by Meta (Facebook) for serving the social graph at scale. Shards data across MySQL instances with a caching layer, later extended with the RAMP-TAO protocol for geo-distributed atomic visibility. Not available as a standalone product.
Details
Links
Feature Scores
Community & Business
Active development No updates in 6+ months
Commercial support No commercial support
Live community No community activity data
Open Source Closed source
Pricing No pricing information
Trendiness Declining trend
Deployment
Containerization No container image
Work as dedicated instance Can run as standalone server
Work as embedded Standalone only
Testing in-memory version No in-memory option
Platform
Operating on Linux Not supported
Operating on Windows Not supported
SaaS offering Self-hosted only
Operations
Automatic updates Manual updates only
Client side caching Client-side cache available
Data versioning support No versioning
Live backups Hot backup supported
Distribution
Cluster Re-balancing No auto-rebalancing
Data Distribution Data sharding supported
High-Availability HA mechanisms available
Query Distribution No distributed queries
Replication support Replication available
Developer Experience
Data types defined Composite data types
Logging/Auditing No logging/auditing
Object-Graph Mapper No object mapper
Reactive programming No reactive programming
Documentation up-to-date No documentation
Binary protocol Text-based protocols only
CLI No CLI
GUI No GUI
Data Model
Multi-database Graph-only
Graph-native data Graph abstraction layer
REST API REST endpoint available
Query Language No query language
Transactions
Granular locking No granular locking
Multiple isolation levels Read uncommitted only
Read committed transaction Not available
Transaction support ACID transactions
Schema & Security
Constraints No constraints
Schema support Schema definition tools
Secondary indexes Secondary indexes supported
Server side procedures Stored procedures supported
Triggers Event triggers supported
Authentication No authentication
Authorization No authorization
Data encryption No encryption