20250217

Q. Why do we need TLS certificates to communicate over HTTPS while computers can simply encrypt connections?

A. At a high level, we need a legitimate third party—a Certificate Authority (CA)—to verify the identities of computers (websites, servers, etc.) so that users can trust they’re communicating with the intended entity and not an imposter.

I feel refreshed by ignoring all notifications from messenger apps :)

• reviewed some pull requests
• 30 minutes walk
• Desining Data-Intensive Applications
  • Linearizability: systems behave as if there is only one copy of the data, so that any reads don’t go backwards.
  • != Serializability: databases behave as if transactions are executed in a serial order.
  • The author pointed out that the conventional explanation of the CAP theorem picking two out of Consistency, Availability, and Partition tolerance is misleading because partition is inevitable when a network is involved. I only knew the concept of the CAP theorem, so the point of view is new to me.
• journaling (zero second thinking)

TODO:

• Print out tax forms
• Pay state taxes
• Buy an envelope
• File the tax return
• 2044E, F
• Oath Ceremony (20250220)
• haircut
• live plants for my desk, probably Pothos

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