Cassandra Training Overview
Accelebrate's Introduction to Cassandra 4 for Developers training course teaches attendees how to work with this distributed, open source NoSQL database management system. Attendees learn Cassandra architecture and how to query the database using CQL (Cassandra Query Language), as well as how to use the Java client library to query Cassandra in a production environment.
This course includes coverage of Cassandra 4.x, but is also suitable for users of Cassandra 3.
Location and Pricing
Accelebrate offers instructor-led enterprise training for groups of 3 or more online or at your site. Most Accelebrate classes can be flexibly scheduled for your group, including delivery in half-day segments across a week or set of weeks. To receive a customized proposal and price quote for private corporate training on-site or online, please contact us.
In addition, we offer some courses as live, instructor-led online classes for individuals.
Objectives
- Understand the needs that C* addresses
- Be familiar with the operation and structure of C*
- Be able to install and set up a C* database
- Use the C* tools, including cqlsh, nodetool, and ccm (Cassandra Cluster Manager)
- Be familiar with the C* architecture, and how a C* cluster is structured
- Understand how data is distributed and replicated in a C* cluster
- Understand core C* data modeling concepts, and use them to create well-structured data models
- Use data replication and eventual consistency intelligently
- Understand and use CQL to create tables and query for data
- Know and use the CQL data types (numerical, textual, uuid, etc.)
- Understand the various kinds of primary keys available (simple, compound, and composite primary keys)
- Use more advanced capabilities like collections, counters, secondary indexes, CAS (Compare and Set), static columns, and batches
Prerequisites
Students should have reasonable Java experience and some knowledge of databases.
Outline
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Cassandra Overview
- Why We Need Cassandra
- High level Cassandra Overview
- Cassandra Features
- Basic Cassandra Installation and Configuration
Cassandra Architecture and CQL Overview
- Cassandra Architecture Overview
- Cassandra Clusters and Rings
- Data Replication in Cassandra
- Introduction to CQL
- Defining Tables with a Single Primary Key
- Using cqlsh for Interactive Querying
- Selecting and Inserting/Upserting Data with CQL
- Data Replication and Distribution
- Basic Data Types (including uuid, timeuuid)
- C* 4.x Improvements
Data Modeling and CQL Core Concepts
- Defining a Compound Primary Key
- CQL for Compound Primary Keys
- Partition Keys and Data Distribution
- Clustering Columns
- Overview of Internal Data Organization
- Additional Querying Capabilities
- Result Ordering - ORDER BY and CLUSTERING ORDER BY
- UPDATE and DELETE Queries
- Result Filtering, ALLOW FILTERING
- Batch Queries
- Data Modeling Guidelines
- Denormalization
- Data Modeling Workflow
- Data Modeling Principles
- Primary Key Considerations
- Composite Partition Keys
- Defining with CQL
- Data Distribution with Composite Partition Key
- Overview of Internal Data Organization
Additional CQL Capabilities
- Indexing
- Primary/Partition Keys and Pagination with token()
- Secondary Indexes and Usage Guidelines
- Cassandra Counters
- Counter Structure and Definition
- Using Counters
- Counter Limitations
- Cassandra collections
- Collection Structure and Uses
- Defining Collections (set, list, and map)
- Querying Collections (Including Insert, Update, Delete)
- Limitations
- Overview of Internal Storage Organization
- Static Column: Overview and Usage
- Static Column Guidelines
- Materialized View: Overview and Usage
- Materialized View Guidelines
Data Consistency In Cassandra
- Overview of Consistency in Cassandra
- CAP Theorem
- Eventual (Tunable) Consistency in C* - ONE, QUORUM, ALL
- Choosing CL ONE
- Choosing CL QUORUM
- Achieving Immediate Consistency
- Using other Consistency Levels
- Internal Repair Mechanisms (Read Repair, Hinted Handoff)
Lightweight Transactions (LWT)/ Compare and Set (CAS)
- Overview of Lightweight Transactions
- Using LWT, the [applied] Column
- IF EXISTS, IF NOT EXISTS, Other IF conditions
- Basic CAS Internals
- Overhead and Guidelines
Practical Considerations
- Dealing with Write Failure
- Unavailable Nodes and Node Failure
- Requirements for Write Operations
- Key and Row Caches
- Cache Overview
- Usage Guidelines
- Multi-Data Center Support
- Overview
- Replication Factor Configuration
- Additional Consistency Levels - LOCAL/EACH QUORUM
- Deletes
- CQL for Deletion
- Tombstones
- Usage Guidelines
New C* 4 Features
- Virtual Tables
- Audit and Query Logging
- Transient Replication
Conclusion
Training Materials
All Cassandra training students receive comprehensive courseware.
Software Requirements
VirtualBox 5.0 or later in a Windows, Linux, or Mac environment with at least 8GB of physical RAM. Accelebrate provides a virtual machine with everything necessary for this class.
