Maintenance of code knowledge for up-to-date access thereof. In one embodiment, a computer-implemented method for providing code knowledge in response to receiving a request for code knowledge regarding a computer program. The method first creates a proxy, then a node to which the proxy is pointed by a unique node key and which includes the code knowledge. The method updates the node as necessary to provide accurate code knowledge. For example, the method sets a flag of the proxy indicating the node as invalid upon a change event. Upon the flag of the proxy indicating the node as invalid, and upon receiving a second request for the code knowledge, the method recreates the node.