= New Features
:navtitle: What's new

== New Features in Apache Cassandra 6.0

This section covers the new features in Apache Cassandra 6.0.

* https://cwiki.apache.org/confluence/x/FQRACw[ACID Transactions (Accord)]
* https://cwiki.apache.org/confluence/x/YyD1D[Transactional Cluster Metadata]
* https://cwiki.apache.org/confluence/x/8IpyEg[Constraints]


== New Features in Apache Cassandra 5.0

This section covers the new features in Apache Cassandra 5.0.

* Storage Attached Indexes: xref:cassandra:developing/cql/indexing/sai/sai-overview.adoc[Docs], https://cwiki.apache.org/confluence/display/CASSANDRA/CEP-7%3A+Storage+Attached+Index[CEP-7],  https://issues.apache.org/jira/browse/CASSANDRA-16052[JIRA ticket]
* Trie memtables: xref:cassandra:architecture/storage-engine.adoc#trie-memtables[Docs], https://cwiki.apache.org/confluence/display/CASSANDRA/CEP-19%3A+Trie+memtable+implementation[CEP-19], https://issues.apache.org/jira/browse/CASSANDRA-17240[JIRA ticket]
* Trie SSTables: https://cwiki.apache.org/confluence/display/CASSANDRA/CEP-25%3A+Trie-indexed+SSTable+format[CEP-25], https://issues.apache.org/jira/browse/CASSANDRA-18398[JIRA ticket]
* JDK 17: xref:cassandra:reference/java17.adoc[Docs], https://issues.apache.org/jira/browse/CASSANDRA-16895[JIRA ticket]
* More guardrails: https://github.com/apache/cassandra/blob/trunk/NEWS.txt[NEWS.txt]
* TTL and writetime on collections and UDTs: xref:cassandra:developing/cql/functions.adoc#writetime-and-ttl-functions[Docs], https://issues.apache.org/jira/browse/CASSANDRA-8877[JIRA ticket]
* New vector data type: xref:cassandra:reference/vector-data-type.adoc[Docs], https://cwiki.apache.org/confluence/display/CASSANDRA/CEP-30%3A+Approximate+Nearest+Neighbor%28ANN%29+Vector+Search+via+Storage-Attached+Indexes[CEP-30], https://issues.apache.org/jira/browse/CASSANDRA-18504[JIRA ticket]
* New vector similarity functions: xref:cassandra:vector-search/overview.adoc[Docs], https://cwiki.apache.org/confluence/display/CASSANDRA/CEP-30%3A+Approximate+Nearest+Neighbor%28ANN%29+Vector+Search+via+Storage-Attached+Indexes[CEP-30], https://issues.apache.org/jira/browse/CASSANDRA-18640[JIRA ticket]
* Unified Compaction Strategy: xref:cassandra:managing/operating/compaction/ucs.adoc[Docs], https://cwiki.apache.org/confluence/display/CASSANDRA/CEP-26%3A+Unified+Compaction+Strategy[CEP-26], https://issues.apache.org/jira/browse/CASSANDRA-18397[JIRA ticket]
* New Mathematical CQL functions: abs, exp, log, log10 and round: xref:cassandra:developing/cql/functions.adoc[Docs], https://issues.apache.org/jira/browse/CASSANDRA-17221[JIRA ticket]
* Dynamic Data Masking: xref:cassandra:developing/cql/dynamic-data-masking.adoc[Docs], https://cwiki.apache.org/confluence/display/CASSANDRA/CEP-20%3A+Dynamic+Data+Masking[CEP-20], https://issues.apache.org/jira/browse/CASSANDRA-17940[JIRA ticket]
* New CIDR authorizer: https://cwiki.apache.org/confluence/display/CASSANDRA/CEP-33%3A+CIDR+filtering+authorizer[CEP-33], https://issues.apache.org/jira/browse/CASSANDRA-18592[JIRA ticket]
* Extend maximum expiration date (TTL): https://github.com/apache/cassandra/blob/trunk/NEWS.txt[NEWS.txt], https://issues.apache.org/jira/browse/CASSANDRA-14227[JIRA ticket]
* New CQL native scalar functions for collections: https://issues.apache.org/jira/browse/CASSANDRA-18060[JIRA ticket]
* New sstablepartitions offline tool to find large partitions: https://issues.apache.org/jira/browse/CASSANDRA-8720[JIRA ticket]
* New snitch for Microsoft Azure: https://issues.apache.org/jira/browse/CASSANDRA-18646[JIRA ticket]
* Pluggable crypto provider: https://issues.apache.org/jira/browse/CASSANDRA-18624[JIRA ticket]
* New virtual table to view system logs: https://issues.apache.org/jira/browse/CASSANDRA-17948[JIRA ticket]
// LLP: waiting to see if they make 5.0