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Redpanda
With 12,400 GitHub stars and adoption across enterprises processing billions of events daily, Redpanda delivers a complete Kafka wire protocol implementation in C++ that existing Kafka producers, consumers, Kafka Connect connectors, and Kafka Streams applications connect to without code changes — eliminating JVM garbage collection pauses and ZooKeeper coordination overhead through a single binary architecture built on the Seastar framework's thread-per-core model. The integrated schema registry supports Avro, Protobuf, and JSON Schema validation directly within the broker without separate infrastructure. Tiered storage automatically offloads cold data to object storage while maintaining seamless consumer access across the full retention window. Redpanda Console provides a web-based management interface for topic inspection, consumer group monitoring, schema management, and ACL configuration. Redpanda Connect extends the platform with 200+ pre-built connectors for data pipelines between databases, cloud services, and streaming systems. Exactly-once semantics with idempotent producers and transactional guarantees ensure data integrity for financial, healthcare, and compliance workloads. The Adaptable Data Plane in version 26.1 enables per-topic performance profiles balancing throughput, latency, and durability within a single cluster. Deploy via Docker or Kubernetes with official Helm charts — a three-node cluster starts with a single rpk command. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. BSL 1.1 licensed (converts to Apache 2.0 after four years).
Benefits
- Zero JVM Zero ZooKeeper
- Single C++ binary eliminates Java garbage collection pauses, ZooKeeper coordination complexity, and multi-component deployments — reducing operational overhead while achieving 10x lower tail latency.
- Drop-In Kafka Replacement
- Full Kafka wire protocol implementation means existing producers, consumers, Kafka Connect connectors, and Kafka Streams applications migrate by changing only broker addresses without code modifications.
- Thread-Per-Core Architecture Performance
- Seastar framework pins each CPU core to dedicated threads with lock-free data paths, eliminating context switching and achieving predictable microsecond-level latencies under sustained throughput.
- Integrated Data Platform
- Single deployment includes schema registry, HTTP proxy, Raft consensus, web console, and Connect pipelines with 200+ connectors — no separate infrastructure services required.
Features
- Tiered Storage
- Automatically offloads cold partition segments to S3-compatible object storage while maintaining transparent consumer access across the entire retention window without application changes.
- Schema Registry
- Built-in Avro, Protobuf, and JSON Schema validation with compatibility enforcement directly within the broker process — no separate Confluent Schema Registry deployment needed.
- Redpanda Console
- Web-based management UI for topic inspection, consumer group lag monitoring, message browsing, schema management, ACL configuration, and cluster diagnostics.
- Redpanda Connect
- Data pipeline engine with 200+ pre-built connectors for databases, cloud services, APIs, and file systems enabling extract-transform-load workflows without custom code.
- Raft Consensus
- Built-in Raft protocol handles partition replication and leader election without external coordination services, enabling automatic failover and self-healing clusters.