AWS Classroomnotes 18/Dec/2022

AWS Dynamodb Contd..

• Write/Read capacity modes Refer Here
• Read Request unit: capacity to read 1KiB/Second
• Write Request unit: Cacpacity to write 1 KiB/Second
• DAX Refer Here
• Create a Dynamo Db Table
  
• Replications can be set across regions
  
• Consistency Models
  • Strong: All the replicated instances will have same data
  • Eventual: There is a delay for the replicated instances to get the newly edited or created data.
• Backup:
  • Ondemand: One time backup
    
  • Scheduled: Periodic backup

AWS Managed Databases for Popular NoSQL Databases

• AWS has provided
  • Mongodb as a service ==> Document Database
  • Cassandra as a Service ==> Key Spaces.