Apache Ignite vs TiKV

Apache Ignite is a free, open-source, memory-first distributed SQL database for high-velocity workloads. It keeps data primarily in memory, with persistence available through AIPERSIST, and supports ACID transactions across partitions using Raft consensus. MVCC snapshot isolation enables non-blocking reads. SQL access includes JDBC drivers, a Table API and native APIs, while catalog-driven schema management allows column and index changes without stopping the cluster. DataStreamer handles high-throughput writes with backpressure control. Native clients are listed for Java, .NET, C++ and Python, alongside AWS, Azure, GCE and Spring extensions. Built-in operational capabilities include authentication, SSL/TLS security, OpenTelemetry metrics, recovery snapshots and backups. Listed uses include event stream processing, microservices state management, session management and AI/ML feature stores. Ignite is self-hosted and available through binary, source, Docker and Maven/Gradle options. The project identifies Ignite 2 as a long-term-support release recommended for existing deployments.

TiKV is a distributed transactional key-value database designed as a unified storage layer across nodes. It provides a raw key-value API and a transactional key-value API with ACID semantics, but those APIs cannot both be used on the same keyspace. The project says it can support petabyte-scale deployments spanning trillions of rows. Raft groups replicate data across nodes for fault tolerance, while horizontal scaling and rebalancing support changes in cluster capacity. RawKV also includes time-to-live expiration and compare-and-swap operations. The documentation lists Java, Go, Rust, Python, and C++ clients; Java and Go are marked stable, while the others are marked unstable. TiKV is self-hosted and Apache 2.0 licensed, with Linux, macOS, Windows, and API listed as platforms. Its documentation describes TLS for network connections and configurable encryption at rest, including AES methods. TiKV was originally created by PingCAP and is a Cloud Native Computing Foundation graduate project. The community page recommends Slack for general communication and provides a dedicated mailing list for security vulnerability reports.