Soenneker.Validators.ExpiringKey

A validation module that checks for keys, stores them, expires them after an amount of time

Ideal for caching, session management, and more.

?? Features

• Validate Key: Check if a key exists.
• Add Key: Add a key with an expiration time.
• Validate and Add: Validate if a key exists and add it if not.
• Remove Key: Remove a key.

Installation

dotnet add package Soenneker.Validators.ExpiringKey

?? Usage

IExpiringKeyValidator can be registered within DI, and injected:

public static async Task Main(string[] args)
{
    ...
    builder.Services.AddExpiringKeyValidatorAsSingleton();
}

or it can be initialized manually: new ExpiringKeyValidator().

Validate Key

Check if a key is present.

bool Validate(string key)

Add Key

Add a key with an expiration time.

void Add(string key, int expirationTimeMilliseconds)

Validate and Add Key

Validate a key and add it if it doesn't exist.

bool ValidateAndAdd(string key, int expirationTimeMilliseconds) // true if doesn't exist, false if it does

Remove Key

Remove a key.

void Remove(string key)

Example

var validator = new ExpiringKeyValidator();
validator.Add("key1", 5000); // 5 seconds

var invalid = validator.Validate("key1"); // false, key exists

await Task.Delay(7000); // wait 7 seconds

var validAfterTime = validator.Validate("key1"); // true, key does not exist