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[AWS Certificate]-Amazon Timestream Amazon Timestream - Overview Fully managed, fast, scalable, serverless time-series database service Time-series data measures how things change over time Store and analyze trillions of time-ordered events per day 1,000x faster query performance at 1/10th the cost of relational databases Automates rollups, retention, tiering, and compression of data Use cases: Log data for DevOps Sensor data for ..
[AWS Certificate]-Amazon Elasticsearch Service Amazon Elasticsearch Service - Overview May be called Amazon ES at the exam Managed version of ElasticSearch (Open source project) The ELK Stack on AWS Cloud ( ElasticSearch + Logstash + Kibana) ElasticSearch - provides search and indexing functionality Logstash - provides log ingestion mechanism, alternative to CloudWatch Logs Kibana - provides real-time dashboards for ES data, is a visualizati..
[AWS Certificate]-Amazon Neptune Amazon Neptune - Overview Fully managed graph database service (non-relational) Relationships are first-class citizens Can quickly navigate relationships and retrieve complex relations between highly connected datasets Can query bilions of relationships. with milisecond latency ACID compliant with immediate consistency Supports transaction semantics for highly concurrent OLTP workloads (ACID tra..
[AWS Certificate]-DocumentDB Amazon DocumentDB - Overview Fully-managed (non-relational) document database for MongoDB workloads JSON documents (nested key-value pairs) stored in collections (~tables) Compatible w/ majority of MongoDB applications, drivers, and tools High performance, s calability, and availability Support for flexible indexing, powerful ad-hoc queries, and analytics Storage and compute can scale independen..
[AWS Certificate]-ElastiCache Amazon ElastiCache - Overview Fully-managed in-memory data store (caching service, to boost DB read performance) It is a remote caching service, or a side cache i.e. separate dedicated caching instance Provides rapid access to data across distributed nodes Two flavors (both are open-source key-value stores) - Amazon ElastiCache for Redis - Amazon ElastiCache for Memcached Sub-millisecond latency..
[AWS Certificate]-Athena & Quicksight Athena Serverless SQL Queries on top of your data in S3, pay per query, output to S3 Supports CSV, JSON, Parquet, ORC Queries are logged in CloudTrail (which can be chained with CloudWatch logs) Greate for sporadic queries Quicksight Business Intelligence tool for data visualization, creating dahsboards Integrates with Athena, Redshift, EMR, RDS... AQUA for Redshift AQUA = Advanced Query Acceler..
[AWS Certificate]-Amazon Redshift Amazon Redshift - Overview OLAP database (Data warehousing solution) based on PostgreSQL OLAP = Online Analytical Processing Can query petabytes of structured and semi-structured data across your data warehouse and your data lake using standard SQL 10x performance than other data warehouses Columnar storage of data (instead of row based) Massively Parallel Query Execution (MPP), highly available..
[AWS Certificate]-DynamoDB Streams DynamoDB Streams 24 Hours time-ordered log of all table-write activity React to changes to DynamoDB tables in real time Can be read by AWS Lambda, EC2, ES, Kinesis ... Use cases: Replication, Archival, Notifications, Log processing DynamoDB Streams are organized into shards Records are not retroactively populated in a stream after enabling it Simply enable streams from DynamoDB console Four supp..

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