Cassandra Lunch 129: What’s New: Apache Cassandra 4.1+ Features & Future

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Anant Corporation

Learn about the new Apache Cassandra features and why you should upgrade to 4.1. Also, some upcoming features.

What’s New:
Apache Cassandra 4.1+
Features & Future
Learn about the new Apache Cassandra features and why you
should upgrade to 4.1. Also, some upcoming features.
Rahul Xavier Singh Anant Corporation
Cassandra Lunch 129

Apache Cassandra 4.0/4.1
Is a major upgrade. It
means new features, but it
also means dropping
support for old 2.x/3.x.

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Agenda
● Use/Development:
New CQL Features/
Consistency Updates + ACID
● Security & Operations/ Cloud
Native Features

$● CQL Improvements: Several ○ Group by time range in GROUP BY clause. ○ LWTs now allow the use of CONTAINS and CONTAINS KEY conditions in conditional updates: "UPDATE sessions SET draft= 1 WHERE session_id = '{guid}' IF session_preference CONTAINS KEY ‘allow_drafts’" ○ IF EXISTS and IF NOT EXISTS in ALTER statements. ● CEP-14: Paxos improvements. Less round trips for writes. ● Conﬁg: New & Improved Conﬁguration Format ● 5.0: CEP-15: General Purpose Transactions Based on Accord (Apple Paper) + CEP-7 Storage Attached Index Better Development/Use$

Better Operability
● CEP-10: Cluster and Code Simulations for exploring
state space and correctness testing
● CEP-3: Guardrails for preventing common
anti-patterns and warnings/failures logging. (Apache
Cassandra Blog)
● CEP-13: Denylisting to reduce overloaded partition
keys eﬀect on nodes and cluster
● SSTable Identiﬁers to make it easy to manage
SSTables
● Pluggable Memtables / Schema Management

Better Security
● CEP-16: Auth Plugin Support for CQLSH for
authentication to source credentials from LDAP,
Kerberos, and other stores
● CEP-9: Pluggable SSLContext creation for 3rd party
SSL/TLS providers
● Passwords: Support for pre-hashed passwords in CQL
for eliminating plain text credentials
● Improvements in nodetool, backup and restore
● Improvements in GRANT/REVOKE/LIST statements
● New system tables for security and monitoring

$Better Cloud ● CQL Improvements: Several ○ The GROUP BY clause in CQL queries can now group by time range. ○ LWTs now allow the use of CONTAINS and CONTAINS KEY conditions in conditional updates: "UPDATE sessions SET draft= 1 WHERE session_id = '{guid}' IF session_preference CONTAINS KEY ‘allow_drafts’" ○ IF EXISTS and IF NOT EXISTS in ALTER statements. ● CEP-14: Paxos improvements. Less round trips for writes. ● Conﬁg: New & Improved Conﬁguration Format ● FUTURE: CEP-15: General Purpose Transactions Based on Accord (Apple Paper)$

11
Key Takeaways for Cassandra 4.1
It’s time to upgrade.
Better security
Better developer experience
Better operability
- Cassandra Community will only
support 2 major versions at a time.
- Guardrails, denylisting, monitoring
via system views make it easier to
stop bad things from happening.
- Being able to extend SSContext
allows for integration to Vault,
AWS KMS, etc.
- Pluggable Memtable, Schema
makes it easier to optimize for use
case.
- Continued improvements to CQL,
Consistency engines
Better extendability

Resources
● https:/
/cassandra.apache.org/doc/latest/cassandra/new/index.html
● https:/
/www.datastax.com/blog/its-time-to-upgrade-to-cassandra-4-1
● https:/
/www.instaclustr.com/blog/apache-cassandra-4-1-discover-whats-new/
● https:/
/github.com/apache/cassandra/blob/cassandra-4.1/NEWS.txt
● https:/
/cloud7.news/development/apache-cassandra-4-1-is-now-available/

13
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Cassandra Lunch 129: What’s New: Apache Cassandra 4.1+ Features & Future

1. What’s New: Apache Cassandra 4.1+ Features & Future Learn about the new Apache Cassandra features and why you should upgrade to 4.1. Also, some upcoming features. Rahul Xavier Singh Anant Corporation Cassandra Lunch 129

2. Apache Cassandra 4.0/4.1 Is a major upgrade. It means new features, but it also means dropping support for old 2.x/3.x.

3. We help platform owners reach beyond their potential to serve a global customer base that demands Everything, Now.

4. We design with our Playbook, build with our Framework, and manage platforms with our Approach so our clients Think & Grow Big.

5. Our Customers

6. Agenda ● Use/Development: New CQL Features/ Consistency Updates + ACID ● Security & Operations/ Cloud Native Features

7. ● CQL Improvements: Several ○ Group by time range in GROUP BY clause. ○ LWTs now allow the use of CONTAINS and CONTAINS KEY conditions in conditional updates: "UPDATE sessions SET draft= 1 WHERE session_id = '{guid}' IF session_preference CONTAINS KEY ‘allow_drafts’" ○ IF EXISTS and IF NOT EXISTS in ALTER statements. ● CEP-14: Paxos improvements. Less round trips for writes. ● Conﬁg: New & Improved Conﬁguration Format ● 5.0: CEP-15: General Purpose Transactions Based on Accord (Apple Paper) + CEP-7 Storage Attached Index Better Development/Use

8. Better Operability ● CEP-10: Cluster and Code Simulations for exploring state space and correctness testing ● CEP-3: Guardrails for preventing common anti-patterns and warnings/failures logging. (Apache Cassandra Blog) ● CEP-13: Denylisting to reduce overloaded partition keys eﬀect on nodes and cluster ● SSTable Identiﬁers to make it easy to manage SSTables ● Pluggable Memtables / Schema Management

9. Better Security ● CEP-16: Auth Plugin Support for CQLSH for authentication to source credentials from LDAP, Kerberos, and other stores ● CEP-9: Pluggable SSLContext creation for 3rd party SSL/TLS providers ● Passwords: Support for pre-hashed passwords in CQL for eliminating plain text credentials ● Improvements in nodetool, backup and restore ● Improvements in GRANT/REVOKE/LIST statements ● New system tables for security and monitoring

10. Better Cloud ● CQL Improvements: Several ○ The GROUP BY clause in CQL queries can now group by time range. ○ LWTs now allow the use of CONTAINS and CONTAINS KEY conditions in conditional updates: "UPDATE sessions SET draft= 1 WHERE session_id = '{guid}' IF session_preference CONTAINS KEY ‘allow_drafts’" ○ IF EXISTS and IF NOT EXISTS in ALTER statements. ● CEP-14: Paxos improvements. Less round trips for writes. ● Conﬁg: New & Improved Conﬁguration Format ● FUTURE: CEP-15: General Purpose Transactions Based on Accord (Apple Paper)

11. 11 Key Takeaways for Cassandra 4.1 It’s time to upgrade. Better security Better developer experience Better operability - Cassandra Community will only support 2 major versions at a time. - Guardrails, denylisting, monitoring via system views make it easier to stop bad things from happening. - Being able to extend SSContext allows for integration to Vault, AWS KMS, etc. - Pluggable Memtable, Schema makes it easier to optimize for use case. - Continued improvements to CQL, Consistency engines Better extendability

12. Resources ● https:/ /cassandra.apache.org/doc/latest/cassandra/new/index.html ● https:/ /www.datastax.com/blog/its-time-to-upgrade-to-cassandra-4-1 ● https:/ /www.instaclustr.com/blog/apache-cassandra-4-1-discover-whats-new/ ● https:/ /github.com/apache/cassandra/blob/cassandra-4.1/NEWS.txt ● https:/ /cloud7.news/development/apache-cassandra-4-1-is-now-available/

13. 13 Thank you and Dream Big. Hire us - Design Workshops - Innovation Sprints - Service Catalog Anant.us - Read our Playbook - Join our Mailing List - Read up on Data Platforms - Watch our Videos - Download Examples

Cassandra Lunch 129: What’s New: Apache Cassandra 4.1+ Features & Future

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