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Amazon Aurora – Definition & Overview

Amazon Aurora – Definition & Overview


Amazon Aurora is a relational database engine developed by Amazon Web Services. It intends to deliver high performance, scalability, and durability while preserving compatibility with MySQL and PostgreSQL.

Moreover, it functions with a collective approach with data replication in the AWS accessibility zone for efficient data availability.

Features of Amazon Aura:

Amazon Aurora, a relational database engine from Amazon Web Services, proposes a variety of features that contribute to its performance, scalability, and ease of use. Below are key features of Amazon Aurora:

  1. Compatibility:

Aurora is compatible with MySQL and PostgreSQL, enabling stress-free movement of existing applications with marginal modifications.

  1. High Performance:

It provides high performance with low-latency read and write operations, making it appropriate for transactional and analytical workloads.

  1. Storage and Replication:

Aurora automatically splits the database volume into 10GB segments spread across multiple disks, augmenting performance and durability.

  1. Auto-Scaling Storage:

It adjusts the size of the basic storage volume, streamlining storage management and removing manual intervention.

  1. Multi-AZ Deployments:

Aurora backs multi-AZ deployments for high availability. It imitates data across multiple Availability Zones. However, in case of a failure, it automatically fails over to a replica without data loss.

  1. Read Replicas:

Users can create up to 15 read replicas for unloading read traffic from the primary instance, facilitating horizontal scaling for read-intensive workloads.

  1. Global Databases:

The Global Databases allow replication across regions, providing low-latency access for read operations universally. Such is beneficial for applications with a worldwide user base.

  1. Cost-Effective:

It intends to be cost-effective, proposing a balance between performance and pricing compared to traditional commercial databases.

How Does Amazon Aurora Work?

Amazon Aurora is a relational database engine designed for high performance and scalability. It uses a distributed architecture, with each Aurora database case comprising a set of read and write nodes.

Additionally, data is stored across various Availability Zones (AZs), providing fault tolerance and ensuring high availability. It employs a unique storage subsystem that replicates data six ways across 10GB segments, automatically recovering from failures without data loss.

The read-and-write quorums operate independently, allowing read traffic offload to read replicas. In addition, Aurora continuously backs up data to Amazon S3, supporting point-in-time recovery.

The engine is compatible with MySQL and PostgreSQL, easing migration for users of these popular database systems. Nevertheless, this combination of innovative architecture, replication strategies, and compatibility makes Amazon Aurora a performing and reliable solution for various relational database workloads.

Advantages of Amazon Aurora:

Amazon Aurora provides numerous advantages that make it a convincing choice for organizations seeking a scalable and high-performance relational database solution:

  • It provides fast and predictable performance for read and write operations, making it suitable for various applications, from small-scale projects to large, mission-critical systems.
  • Aurora is well-suited to MySQL and PostgreSQL, easing the migration of existing applications with minimal changes.
  • It certifies high availability with automatic failover and replication across multiple Availability Zones (AZs).
  • With support for up to 15 read replicas, Aurora facilitates horizontal scaling to handle increasing read workloads. Furthermore, the auto-scaling storage feature also streamlines capacity planning for budding databases.
  • The Global Databases enable cross-region replication, providing low-latency access to read replicas in diverse regions.
  • Aurora supports encryption at rest and in transit, enhancing the security of sensitive data. Integration with AWS Key Management Service (KMS) allows robust encryption key management.
  • As a fully managed service, it handles routine database management tasks, comprising backups, software patching, and maintenance. Therefore, it allows users to focus on application development rather than infrastructure management.

Limitations of Amazon Aurora:

Although Amazon Aurora offers numerous advantages, it also has certain limitations that users should consider:

  • It can be more expensive than traditional open-source databases like MySQL or PostgreSQL.
  • There is a minimum storage allocation per database instance, and scaling down storage can be challenging.
  • It lacks certain index management features in MySQL and PostgreSQL, which might impact performance tuning for specific workloads.
  • Certain progressive features and extensions supported by these databases might not be fully compatible with Aurora.
  • It might not be available in all AWS regions, limiting user deployment preferences in certain geographic locations.


In conclusion, Amazon Aurora is a highly performing and scalable relational database solution that offers smooth compatibility with MySQL and PostgreSQL. However, its automatic scaling, high availability, and global database features make it attractive; users must ponder potential limitations such as cost, storage scaling challenges, and compatibility constraints.

Furthermore, Aurora’s managed service approach lets organizations focus on application development. Still, users should sensibly assess their specific needs and weigh the advantages against limitations to determine their aptness for their database workloads within the AWS ecosystem.

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