Overview of common go-validator rules
The go-playground/validator library provides a wide range of tags to validate Go struct fields. Common rules include:
required: Field must be present.min/max: Minimum/maximum length or value.email: Must be a valid email address.url: Must be a valid URL.regexp: Must match a specific regular expression.length: Length must be within a specific range.eq/ne: Must equal / must not equal a specific value.lt/lte: Must be less than / less than or equal to a value.gt/gte: Must be greater than / greater than or equal to a value.uuid: Must be a valid UUID.ip/ipv4/ipv6: Must be a valid IP address (generic, v4, or v6).