An event queue is a system that manages and prioritizes events or actions that need to be processed. In the context of blockchain, it serves as a temporary holding space for transactions and operations before they are executed.When users make transactions, such as sending tokens or executing smart contracts, these actions are placed into the event queue. The queued events must be ordered and processed according to specific rules, such as transaction fees or timestamp priority.By using an event queue, the system can efficiently handle multiple actions simultaneously, reducing delays and ensuring that transactions are executed smoothly. This prevents network congestion and allows users to receive timely confirmations of their activities.Overall, an event queue is essential for maintaining order and efficiency in the processing of transactions and smart contracts within a blockchain environment.