SQLite

Website

sqlite.org

$ Details

Categories

#Databases #Relational Databases #NoSQL Databases #Tool

Amazon RDS for PostgreSQL

Website

aws.amazon.com

$ Details

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Categories

#Cloud Hosting #Cloud Storage #Cloud Computing #Databases

SQLite features and specs

• Zero Configuration
  SQLite does not require any server setup or configuration, allowing for easy integration and deployment in applications.
• Lightweight
  It is extremely lightweight, with a small footprint, making it ideal for embedded systems and mobile applications.
• Self-Contained
  SQLite is self-contained, meaning it has minimal external dependencies, which simplifies its distribution and usage.
• File-Based Storage
  Data is stored in a single file, which makes it easy to manage and transfer databases as simple files.
• ACID Compliance
  SQLite supports Atomicity, Consistency, Isolation, and Durability (ACID) properties, ensuring reliable transactions.
• Cross-Platform
  SQLite is available on numerous platforms, including Windows, MacOS, Linux, iOS, and Android, providing a broad compatibility range.
• Public Domain
  SQLite operates under the public domain, allowing for unrestricted use in commercial and non-commercial applications.

Possible disadvantages of SQLite

• Limited Scalability
  SQLite is not designed to handle high levels of concurrency and large-scale databases, making it less suitable for large, high-traffic applications.
• Write Performance
  Write operations can be slower compared to server-based databases, especially under heavy write loads.
• Lack of Certain Features
  SQLite lacks some advanced features offered by other RDBMS like stored procedures, user-defined functions, and full-text search indexing.
• Security
  As SQLite is file-based, it might lack some of the security features present in server-based databases, such as sophisticated access control.
• Concurrency
  SQLite uses a locking mechanism to control access to the database, which can lead to contention and performance bottlenecks in highly concurrent environments.
• Backup and Restore
  While it's straightforward to copy SQLite database files, it lacks the advanced backup and restore features found in more complex RDBMS.

Amazon RDS for PostgreSQL features and specs

• Managed Service
  Amazon RDS for PostgreSQL is a fully managed service, meaning that AWS handles routine database tasks such as backups, patch management, and failover, reducing the operational burden on users.
• Scalability
  The service allows for easy vertically scaling of database instances as application demands grow, without requiring downtime. This helps businesses to adapt to changing workloads efficiently.
• High Availability
  With Multi-AZ deployments, Amazon RDS provides enhanced reliability and availability. It automatically creates a primary database instance and synchronously replicates data to a standby instance in a different Availability Zone.
• Security Features
  Amazon RDS integrates with AWS Identity and Access Management (IAM) for access control and offers encryption at rest and in transit capabilities, bolstering data security.
• Backup and Recovery
  Automatic backups, snapshots, and point-in-time recovery simplify data recovery and help ensure that data can be restored to any given second during the retention period.

Possible disadvantages of Amazon RDS for PostgreSQL

• Cost
  The cost of running a managed service like Amazon RDS can be higher than managing a database in-house, especially for smaller organizations or when optimal configurations are not utilized.
• Limited Customization
  Since Amazon RDS is a managed service, there are certain limitations on access to the underlying operating system and database configurations, which may hinder some advanced customizations and optimizations.
• Vendor Lock-In
  Using RDS for PostgreSQL can lead to vendor lock-in, making it difficult for businesses to move away from AWS without incurring data transfer costs or requiring significant re-engineering efforts.
• Maintenance Windows
  Updates and patches are applied during scheduled maintenance windows, which might cause disruptions if the timing is not properly managed or if unexpected performance issues occur during these periods.
• Limited Extension Support
  While RDS for PostgreSQL supports a wide range of extensions, not all PostgreSQL extensions are available, potentially limiting additional functionality that might be needed for specialized use cases.

SQLite | What, Why , Where

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Amazon RDS for PostgreSQL/Amazon Aurora PostgreSQL Operational Best Practices | AWS Events