Exercises

• 6.1 Data compression efficiency: Write a command-line script that takes a file as input and compresses it using the different algorithms available in the zlib module (Brotli, Deflate, Gzip). You want to produce a summary table that compares the algorithm's compression time and compression efficiency on the given file. Hint: This could be a good use case for the fork pattern, but remember that we made some important performance considerations when we discussed it earlier in this chapter.
• 6.2 Stream data processing: On Kaggle, you can find a lot of interesting data sets, such as the London Crime Data (nodejsdp.link/london-crime). You can download the data in CSV format and build a stream processing script that analyzes the data and tries to answer the following questions:
  • Did the number of crimes go up or down over the years?
  • What are the most dangerous areas of London?
  • What is the most common crime per area?
  • What is...