20250112

• Zero Second Thinking
• Designing Data-Intensive Applications
  • It’s getting harder and harder to digest the contents
  • Read Commited: no dirty reads, no dirty writes
  • Snapshot Isolation: no read skew (an example of nonrepeatable read)
  • Serializable Isolation: the strongest serialization level that also prevents write skew and phantoms
    • Serial Execution
    • Two-Phase Locking (2PL): Lock records that may result in conflicts between transactions. checks beforehand
    • Serializable Snapshot Isolation (SSI): Contrary to Two-Phase Locking, transactions continue anyway, and the database checks if they cause problems when they are commited. They will be aborted if the checks fail. checks afterwards
• Civics Questions

1 hours walk

TODO:

• 2044E, F
• 2048D
• Smog test
  • Ask my parents to transfer the ownership of my car
• Naturalization Interview (20250207)

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