Understand consistency levels for reading and writing.
- [Instructor] Now let's discuss consistency.…When we use data replication, we create the possibility…that copies of data may get out of sync.…For example, a column value may be set…in one copy of the data before the…right operation on the replica is finished.…In some cases this is not a problem…and in other cases, your application…may want to be sure to have the latest data.…Cassandra lets us specify how we want to handle…consistency for read and write operations.…For example, we could decide that…consistency is not important and we'll…just take the results of the first…read from a replica that returns.…
In other cases we may want a majority…of the replicas to report the same answer…so we can be sure of the value.…In some situations, which require high consistency,…we may want all replicas to be in sync.…Here are some of the consistency…levels that we can choose from.…Whenever the number of consistent reads…or writes is reached, the IO operation succeeds.…Now in the Any consistency level, any single result…is sufficient to complete an IO operation.…
- Cassandra architecture
- Keyspaces, tables, and columns
- Installing Java and Cassandra
- CQL data types
- Designing Cassandra tables
- Tuning tables to optimize queries
- When to use secondary indexes and materialized views
- Physical data modeling and distributing data
- Cassandra architecture and its impact on data modeling
Skill Level Intermediate
1. Cassandra Architecture
2. Cassandra Query Language Data Types
3. Designing Cassandra Tables
4. Physical Data Modeling and Distributing Data
Replication in Cassandra2m 1s
5. Cassandra Architecture and Its Impact on Data Modeling
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