Comparing Databases and Generating Schema Models with Flyway

This article explains how to compare databases and generate schema models using Flyway Enterprise CLI with PowerShell. It allows developers and DBAs to identify schema differences between environments and create schema models that capture the current state of a database, making it easier to track and review changes over time. Read more

Deploying PostgreSQL DB Changes Through AWS Developer Tools Using Flyway

The fundamentals of deploying database changes through Flyway are pretty simple. At the root of it all, there are two words you need to know: This of course comes with a whole set of assumptions. You’ve set up your configuration to connect to the correct database being just one of them. And that’s talking about Read more

Using JSON Output to Track and Log Flyway Migration Activity

Flyway's JSON output provides a lot of useful information about the migrations files, database, and version changes, in a format that automated processes can read and use. This article demonstrates how we can create a Flyway callback that uses this JSON output to automatically send simple, human-readable notifications of what happened during a migration, helping developers stay informed about version changes that could impact their work. Read more

Finding Significant Differences in Flyway SQL Migration Code

This article demonstrates using PowerShell-based tokenization to compare two SQL migration files. It ignores non-functional changes like comments or formatting and pinpoints the first meaningful change in SQL logic, providing detailed feedback on its location and nature. Read more

Defusing Flyway Validation Errors using Smarter Checksum Comparisons

This article provides a scripted SQL tokenizer script that quickly verifies whether a Flyway validation error is a real cause for concern, due to retrospective metadata changes, or just the result of a developer valiantly adding formatting and documentation to improve the code. If the changes are purely cosmetic, we can safely run Flyway repair to resume normal migrations. Read more

Simplifying Data Import and Export for Database Development

Extracting and importing data for development and testing is made trickier due to issues such as constraints, dependencies, and special data types. This article introduces a cross-RDBMS solution with JSON for data storage and PowerShell cmdlets that use ODBC to help automate extraction and import, and JSON Schema for validation. Just provide a DSN, and you’re good to go! Read more

Understanding PostgreSQL’s Cache Hit Ratio

This article explores PostgreSQL's buffer cache hit ratio (BCHR), a metric tracked by Redgate Monitor to help you assess the health and performance of your databases. By correctly interpreting this ratio and using it with other relevant memory and IO metrics, you can identify potential bottlenecks in query execution before they impact users. Read more

Making Full Use of Environment Variables for Flyway Settings

Environment Variables make interactive use of Flyway much easier, and they are essential when developing callback scripts. This article explains the range of configuration details you can provide and how, and demos a PowerShell script to auto-convert the parameter values stored in Flyway .conf files into environment variables. Read more

Better Database Incident Management with Redgate Monitor

This article demonstrates how Redgate Monitor helps teams manage database incidents efficiently, by providing the right data to the right people, at each stage of a tiered incident response system. With fewer distractions from routine issues, specialist staff can focus on core tasks while teams resolve problems faster and prevent future disruptions. Read more

The Importance of Access Checks and Controls in Database Development

This article illustrates the importance in any database development project of a 'multi-layered' approach to database access controls and security checks, based on the Principle of Least Privilege. It describes a security incident that was raised when databases related to a local development project were found to have been erroneously deployed to a remote test server. It explains the nature of the incident, what went wrong that allowed it to happen, and the measures that were put in place to prevent its recurrence. Read more

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