Here's a breakdown:
* Deluge: This word literally refers to a great flood of water. However, it's often used figuratively to describe any overwhelming abundance or influx of something.
* In came: This indicates that the deluge arrived suddenly and unexpectedly.
Examples:
* "After the announcement, in came a deluge of applications for the new job." (Meaning many people applied for the job all at once.)
* "The release of the new album was followed by a deluge of media attention." (Meaning there was a lot of news and discussion about the album.)
* "In came a deluge of complaints about the new software." (Meaning many people were unhappy with the software and expressed their dissatisfaction.)
The phrase "in came a deluge" emphasizes the suddenness and overwhelming nature of the event. It suggests that the influx was so large and unexpected that it was difficult to manage or cope with.