Hello! We are a writer team from Definer Inc. In this issue, you are wondering about the use of some of the best practices and cautions for Amazon RDS. Let's take a look at the actual screens and resources to explain in detail.

This article summarizes best practices and things to keep in mind when using Amazon RDS.

First, let's review Amazon RDS.   Amazon RDS (Amazon Relational Database Service) is a relational database service provided by AWS. A relational database is represented by two axes, rows and columns, based on which data is searched and edited. In layman's terms, it is like a highly functional Excel. Relational databases are suited for efficient biosynthesis and management of information. As such, they are used to manage many types of data, such as deposit and withdrawal data, employee lists, and so on.   The following engines are supported, covering all major databases   PostgreSQL An open source (OSS) database with a reputation for high scalability and rich functionality.   MySQL An open source (OSS) database that is widely used as a basic database.   Oracle Oracle's long-established database with a good balance of scalability and robustness, and a well-developed support system.   SQL Server A database developed by Microsoft, with high compatibility with Microsoft products.   MariaDB An open source (OSS) database based on MySQL with excellent scalability, security, and performance.   Amazon Aurora A database provided by Amazon, featuring high performance.

The following are some best practices for using RDS.   Monitoring Monitor CPU, memory, storage, replica latency, etc. via CloudWatch. Setup CloudWatch alarms to notify you when monitored items reach threshold values.   Performance Have some buffer in storage, and expand storage of RDS instances when approaching the limit. Monitor I/O and consider using read replicas or upgrading the instance type if performance issues arise.   Backups Enable automatic backups and set backup windows so that backups are performed at times of the day when I/O is low and batch processing does not occur, such as late at night. Test failover in the event of a disaster in advance to confirm behavior and to understand the time required.     In addition, take note of the following points.   Points to note ・RDS instances can only be stopped for a maximum of 7 days; they will be automatically started up after 7 days have passed, so be careful if you are managing costs severely. ・A restart is required for setting changes such as instance type upgrades and maintenance window changes. ・Storage size can be expanded but not reduced. ・Storage size can be expanded, but not reduced. ・If client applications cache the DNS of the RDS instance, set the TTL to less than 30 seconds. (Because the IP address of the database may change due to failover, connections from applications may fail if the TTL is too long.

Amazon RDS Best Practices - Amazon Relational Database ... Best Practices for Protecting Sensitive Data in Amazon RDS ... Amazon RDS for PostgreSQL Cross-Region Read Replica ... Amazon RDS Best Practices - Amazon Relational Database ... Amazon RDS for MySQL low memory allocation problem ... Amazon RDS for PostgreSQL Cross-Region Read Replicas ... Migrating an RDS for MySQL database to Amazon Aurora ...

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・Definer Inc. provides one-stop solutions from upstream to downstream of IT. ・We are committed to providing integrated support for advanced IT technologies such as AI and cloud IT infrastructure, from consulting to requirement definition/design development/implementation, and maintenance and operation. ・We are committed to providing integrated support for advanced IT technologies such as AI and cloud IT infrastructure, from consulting to requirement definition, design development, implementation, maintenance, and operation. ・PrismScaler is a high-quality, rapid, "auto-configuration," "auto-monitoring," "problem detection," and "configuration visualization" for multi-cloud/IT infrastructure such as AWS, Azure, and GCP.