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Assorted Rants Tagged ‘Server’, page 2:

Ultimate DB Heresy: Single Writing DB Connection. Part II. Gradual Scalability. All the way from no-scale to perfect-scale.

Quote: “And after this split of USERS table, the system has achieved perfectly linear scalability.”
Another Quote: “Start with a simple single-write-connection DB, with reporting running off the same DB”
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Ultimate DB Heresy: Single Modifying DB Connection. Part I. Performance (Part II. Scalability to follow)

Quote: “Dealing with transaction isolation is very far from being a picnic”
Another Quote: “One of such real-world systems was consistently processing over 30M real-world write transactions/day over one single DB connection, supporting ~100K simultaneous players.”
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Distributed Databases 101: CAP, BASE, and Replication

Quote: “The worst case of inconsistency happens when row X in database A is modified (by a Client connected to datacenter A), and the same row X in database B is independently modified too (by a Client connected to datacenter B).”
Another Quote: “One way to avoid reports affecting operational DB, is via creating a read-only replica of our main operational DB – and running our reports off that replica.”
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Databases 101: ACID, MVCC vs Locks, Transaction Isolation Levels, and Concurrency

Quote: “for larger-scale MOGs, functionality-wise it is common to have 4 different types of databases: transactional processing (OLTP) DBs, real-time reporting DBs, archive DBs, and analytical DBs (OLAP)”
Another Quote: “both MVCC-based and Lock-based DBMS issue locks (and therefore, both can cause all kinds of trouble such as deadlocks etc.); however, the difference lies with the number of locks issued by them.”
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MOG Graphics 101: 3D Maths Basics, Meshes, Client- and Server-Side Polygon Counts

Quote: “for the purposes of the MOG network communications, I usually suggest using Euler angles to represent rotations/orientations”
Another Quote: “One thing which persistently haunts 3D developers, is polygon count.”
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