2h ago · 2 min read · Guarantees for data reliability Day 123 of 149 👉 Full deep-dive with code examples The Bank Transfer Analogy Transferring money from Account A to B: Subtract the amount from A Add the amount to B What if the power goes out between steps? A lost ...
Join discussion14h ago · 6 min read · In a traditional database system, data is usually stored in one primary location. When a user updates information, everyone reading from that database sees the same result almost immediately. Distribu
Join discussion
7h ago · 5 min read · My employment contract said "maintain the database." On my first day I asked where the database was. There was no database. There were 7 Excel sheets. So I built one. The Excel I'll let the data speak for itself. 7 sheets, split by region: a main tab...
Join discussion1d ago · 2 min read · Copying data to multiple servers Day 122 of 149 👉 Full deep-dive with code examples The Backup Copy Analogy Important documents: One copy at home One copy at the bank One copy at your lawyer's If your house burns down, you still have copies! Data...
Join discussion2d ago · 2 min read · Splitting data across servers Day 121 of 149 👉 Full deep-dive with code examples The Library Card Catalog Analogy One huge card catalog is hard to use: Long lines at one catalog If it breaks, no one can find books Split by letters: A-F catalog i...
Join discussion
