Man you people are hard ones. OP had an exchange (as a local) with someone who was impactful in their life. Not to slight Antirez, but I don’t think people are ruining his walks daily to talk about in memory caching. If it was really 5 minutes and a photo (he presumably agreed to) I feel like you all are blowing this way out of proportion.
I remember the first time I ever met someone IRL from a big OSS project. I was a little star struck. Of course he didn’t remember merging my code, but I didn’t expect him to. It’s an experience I will always remember.