centum

↗ HN profile [ 30.6 ms ] full profile

No user record in our sample, but centum has activity below (stories or comments). Likely we have partial data — the full bulk-load will fill profiles in.

  1. I have posts and users. I want to show posts to each user. But I do not want to show the user posts that the user has already seen. What is the best approach to solving this problem? I can make a table that records all…