The company's growth stage is unclear as the provided information is limited. However, based on the mention of 'openresty,' it can be speculated that the company may be involved in web server technology or related services. Without more details regarding the company's background and operations, it is challenging to determine its precise growth stage, whether it is a startup, scale-up, or enterprise. Further information is needed to assess the company's developmental stage and expansion strategies.

Without a specific company description or details about its history, it is difficult to outline key milestones. In the absence of information on revenue growth, customer base expansion, or market penetration, it is not possible to identify significant achievements or milestones in the company's journey. More context is required to highlight any pivotal moments or accomplishments that have shaped the company's trajectory.

There is no information available to outline any notable case studies or significant projects the company has been involved in. Without details on past projects, their impact, and relevance, it is not feasible to provide an overview of the company's case studies. More insights into the company's operations and project history are essential to showcase any impactful endeavors.

The information provided is limited and only mentions '404 Not Found' and 'openresty,' which are common error messages and a web server software, respectively. As a result, there are no specific key company events such as product launches, partnerships, acquisitions, funding rounds, or important awards to elaborate on. Further details about the company's activities, achievements, and events are required to highlight any significant milestones or noteworthy occurrences.