Difference between HashMap and HashTable
Both provide key-value access to data. The Hashtable is one of the original collection classes in Java. HashMap is part of the new Collections Framework, added with Java 2, v1.2. The key difference between the two is that access to the Hashtable is synchronized on the table while access to the HashMap isn't. You can add it, but it isn't there by default.
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Management of Shared Storage Using AWS EFS
Setting up and managing a shared disk/folder using AWS EFS so multiple servers can access the same data at the same time
Cost optimization by archiving standard AWS snapshots
Reduce storage costs by cleaning up and archiving old EC2 or EBS snapshots safely.
Cost optimization by replacing IPv4 with IPv6 and configuring DNS for it
Plan and configure IPv6 addressing and DNS so you can reduce IPv4 usage and related costs.
Create CloudWatch Alarms and Automated Performance-Based Actions
Setting up CloudWatch alarms to monitor server performance and trigger automated actions based on customized conditions.
