A distributed key/value store system using asynchronous messaging systems is provided. A plurality of instances in a cloud computing environment each execute software that enables reading from and writing to a respective local cache, and that enables sending messages through a messaging queue to a cloud environment operating system. When a configuration value is updated locally at an instance, the instance sends a message to the cloud environment operating system, instructing it to update a database and broadcast the update to other instances through each instance's messaging queue. In some embodiments, each instance may read and write to the database directly, and may publish updates to the queues of other instances directly. In some embodiments, a managed encryption key service is used to encrypt sensitive information, securely distribute via distributed key/value store systems, and authenticate and decrypt it by instances of the distributed key/value store systems.