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Scylla is the real-time big data database that is API-compatible with Apache Cassandra and Amazon DynamoDB.
Scylla embraces a shared-nothing approach that increases throughput and storage capacity to realize order-of-magnitude performance improvements and reduce hardware costs.
Scylla is fairly fussy about its build environment, requiring very recent
versions of the C++23 compiler and of many libraries to build. The document
HACKING.md includes detailed information on building and
developing Scylla, but to get Scylla building quickly on (almost) any build
machine, Scylla offers a frozen toolchain,
This is a pre-configured Docker image which includes recent versions of all
the required compilers, libraries and build tools. Using the frozen toolchain
allows you to avoid changing anything in your build machine to meet Scylla's
requirements - you just need to meet the frozen toolchain's prerequisites
(mostly, Docker or Podman being available).
Building Scylla
Building Scylla with the frozen toolchain dbuild is as easy as:
This will start a Scylla node with one CPU core allocated to it and data files stored in the tmp directory.
The --developer-mode is needed to disable the various checks Scylla performs at startup to ensure the machine is configured for maximum performance (not relevant on development workstations).
Please note that you need to run Scylla with dbuild if you built it with the frozen toolchain.
By default, Scylla is compatible with Apache Cassandra and its API - CQL.
There is also support for the API of Amazon DynamoDB™,
which needs to be enabled and configured in order to be used. For more
information on how to enable the DynamoDB™ API in Scylla,
and the current compatibility of this feature as well as Scylla-specific extensions, see
Alternator and
Getting started with Alternator.
Documentation
Documentation can be found here.
Seastar documentation can be found here.
User documentation can be found here.
Training
Training material and online courses can be found at Scylla University.
The courses are free, self-paced and include hands-on examples. They cover a variety of topics including Scylla data modeling,
administration, architecture, basic NoSQL concepts, using drivers for application development, Scylla setup, failover, compactions,
multi-datacenters and how Scylla integrates with third-party applications.
Contributing to Scylla
If you want to report a bug or submit a pull request or a patch, please read the contribution guidelines.