RDS VS REDSHIFT DRIVERS
Interestingly, Amazon Redshift was originally forked from PostgreSQL, which is why PostgreSQL drivers and API libpq work with Amazon Redshift. How is it possible to link these two systems? An RDS PostgreSQL database is not an MPP database, but it does have features that enable multiple instances to be linked to one another.
Linking the high-performance power of Amazon Redshift with the feature-richness of RDS PostgreSQL is an attractive proposition because the two systems complement each other so well. This difference in architecture means that most OLTP databases can handle more concurrent queries because each query is typically less resource-intensive than those in Amazon Redshift. In contrast, most OLTP databases only use a subset of resources on one machine to process each query. This provides excellent performance for analytical queries across a large number of rows. This means that Amazon Redshift is designed to use all of the computing resources across many machines (called nodes) even when executing a single query. RDS PostgreSQL uses a row-based architecture, which offers advantages when the workload is selecting, inserting, updating or deleting a small number of rows at a time, which is typical for OLTP.Īmazon Redshift also uses a massively parallel processing (MPP), shared-nothing architecture. And because the data is stored by column, it can be highly compressed which further reduces I/O and allows more data to be stored and quickly queried. Columnar architecture offers advantages when querying a subset of the columns in a table by greatly reducing I/O. Databases such as RDS PostgreSQL or Amazon Aurora typically store terabytes of data, and they excel at online transaction processing (OLTP) workloads.Īmazon Redshift uses a columnar architecture, which means the data is organized by columns on disk instead of row-by-row as in the OLTP approach.
RDS VS REDSHIFT HOW TO
This post explains how to use two services together-Amazon Redshift and Amazon RDS PostgreSQL-to avoid tradeoffs when choosing between a columnar data store and a row-based data store.Īmazon Redshift is a high-performance, petabyte-scale data warehouse service that excels at online analytical processing (OLAP) workloads. But sometimes you don’t want to compromise. This leads to trying to pick the right tool for the job, which can result in tradeoffs. The design and capabilities of the different AWS services mean that each service has different strengths and excels at different workloads. For example, when would you use Amazon Aurora instead of Amazon RDS PostgreSQL or Amazon Redshift? To answer this question, you must first understand the nature of the data workload and then evaluate other factors such as the quantity of data and query access patterns. Sometimes it can be difficult to know which one to choose. When it comes to choosing a SQL-based database in AWS, there are many options. (Update: This blog post has been translated into Japanese)
Tony Gibbs is a Solutions Architect with AWS
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