Qihoo360/Atlas

Features

• MySQL Proxy Middleware - Acts as high-performance middleware designed to proxy and route traffic for MySQL database clusters.
• Connection Pool Managers - Provides a connection pooler to maintain reusable database sessions and reduce the overhead of establishing new connections.
• Database Sharding - Provides architectural partitioning of large datasets across multiple MySQL database nodes for horizontal scaling.
• Shard-Based Retrieval - Maps database requests to specific backend instances by hashing identifiers to determine the target data shard.
• MySQL Connection Poolers - Manages reusable database connections to reduce the overhead of creating new sessions for every request.
• MySQL Database Sharding - Provides middleware strategies for partitioning and distributing MySQL data across multiple server nodes.
• Read-Write Splitting - Separates database read and write operations by directing queries to replicas and modifications to the primary server.
• Sharding Middleware - Provides a proxy layer that abstracts data distribution and routes queries between applications and MySQL shards.
• Gateway High Availability - Provides a fault-tolerant entry point that ensures availability of the database gateway layer via load balancing.
• High Availability Clustering - Ensures continuous service availability by distributing traffic across multiple proxy instances to eliminate single points of failure.
• Database High Availability - Ensures continuous database access through automated failover and health monitoring of MySQL nodes.
• Traffic Load Balancers - Distributes client requests across multiple backend MySQL servers with automated failover logic.
• Database Connection Pooling - Maintains a pool of reusable MySQL database connections to reduce the overhead of establishing new sessions.
• Protocol-Aware Routing - Intercepts MySQL client requests and directs traffic based on parsed database protocol logic.
• Protocol-Aware Request Routings - Intercepts MySQL client requests and routes traffic to backends based on the parsed database protocol.
• Transaction Management - Manages the transaction lifecycle by automatically rolling back active operations upon unexpected client disconnects.
• Backend Availability Managers - Allows transitioning backend database servers online or offline without interrupting the overall availability of the service.
• Load Balancer Health Management - Implements a health-checking system that monitors backend MySQL nodes and redirects traffic away from unresponsive servers.
• Zero-Downtime Upgrades - Implements a process for updating service binaries using signaling to divert traffic and avoid dropping active connections.
• Upgrade Signaling - Uses system signals to drain active connections and facilitate zero-downtime version upgrades.
• Connection-Based Rollbacks - Automatically rolls back active transactions when a client disconnects unexpectedly to prevent data corruption.
• Upstream Health Monitoring - Implements a health-check system to monitor backend server availability and ensure traffic is routed only to healthy nodes.
• Administrative Control Interfaces - Offers an administrative interface to toggle backend database nodes online or offline without restarting servers.
• Databases and Storage - MySQL-based data middleware for read-write splitting and sharding.

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