Sebastian Sigl

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Feature flags (often called [feature toggles] have existed for a long time in the software development process. We have been using feature flags in some way or another without even knowing it. The feature flag technique doesn’t require you to implement it in this way. Instead, you can control the flags remotely and turn them on/off without even changing the code in production. Decoupling deployment from release helps where the team is supposed to build a feature that requires weeks of work, leading to a long-lived feature branch.

Feature flags (often called  have existed for a long time in the software development process. We have been using feature flags in some way or another without even knowing it. The feature flag technique doesn’t require you to implement it in this way. Instead, you can control the flags remotely and turn them on/off without even changing the code in production. Decoupling deployment from release helps where the team is supposed to build a feature that requires weeks of work, leading to a long-lived feature branch.

Use LaunchDarkly to Quickly Implement Feature Flags

In SQL, the COALESCE() function returns the first non-null value in an entry. It evaluates the values of the entries one by one, ignores the null values, then returns the first value that is not null. It works in PostgreSQL, SQL server, and MySQL.

Coalesce SQL – Example PostgreSQL and SQL Server Functions

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Use LaunchDarkly to Quickly Implement Feature Flags

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