A curated list of resources related to Seastar, an industrial-grade C++ framework for building high-performance servers.

One of the key feature of Seastar is it's event-driven nature which makes it easy for it's user to write non-blocking, asynchronous code. Moreover, Seastar architecture is based on the following points:

• Shared-nothing Design: Seastar uses a shared-nothing model that shards all requests onto individual cores.

• Futures and Promises: An advanced new model for concurrent applications that offers C++ programmers both high performance and the ability to create comprehensible, testable high-quality code.

• High-performance networking : Seastar offers a choice of network stack, including conventional Linux networking for ease of development, DPDK for fast user-space networking on Linux, and native networking on OSv

• Messaging passing : A design for sharing information between CPU cores without time-consuming locking.

Systems and projects using Seastar

• Ceph - Distributed storage system for object, block, and file
  • The seastar-based storage engine is called Crimson
• CPV - Web framework written in C++ and Seastar
• Chogori - Low-latency distributed OLTP database
• Parquet4Seastar - Parquet file format implementation for use in Seastar projects
• Pedis - Replacement for Redis written in Seastar
• Redpanda - Replacement Apache Kafka designed for modern hardware
• Scylladb - Replacement for Apache Cassandra and Amazon DynamoDB
• Shredder - Research prototype for SoCC '19 paper embedding v8 in Seastar
• SMF - RPC framework built for microseconds latencies using Seastar

Resources for learning Seastar

• Official tutorial - a comprehensive tutorial from the creators of Seastar
• Seastar internals - is a series of deep dives into various Seastar components
• Asynchronous Programming with Seastar - is a series of tutorials covering Seastar compnents
• Rolling your own MOM - a series documenting the MOZA middleware

Chedy Najjar

Noah Watkins