Generate related posts based on tags. Sort by the number of shared tags.

Steps:

• Read the posts JSON file.
• Iterate over the posts and populate a map containing: tag -> List<Post> that has that tag
• Iterate over the posts and for each post:
  • Create a map: Post -> int to track the number of shared tags
  • For each tag, Iterate over the posts that have that tag
  • For each post, increment the shared tag count in the map.
• Sort the related posts by the number of shared tags.
• Write the top 5 related posts for each post to a new JSON file.

Run Benchmark

./run.sh go | rust | python | all

Results (on my machine)

Language	Time (avg)
Go	0.55s
Rust	0.04s
Rust (Rayon)	0.02s
Python	7.81s

Special thanks these reddits users for optimizing the Rust code

RB5009
darth_chewbacca
Darksonn
vdrmn
phazer99