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The "ArchitectureInternals" page has been changed by JoshuaMcKenzie: https://wiki.apache.org/cassandra/ArchitectureInternals?action=diff&rev1=34&rev2=35 * !MessagingService handles connection pooling and running internal commands on the appropriate stage (basically, a threaded executorservice). Stages are set up in !StageManager; currently there are read, write, and stream stages. (Streaming is for when one node copies large sections of its SSTables to another, for bootstrap or relocation on the ring.) The internal commands are defined in !StorageService; look for `registerVerbHandlers`. * Configuration for the node (administrative stuff, such as which directories to store data in, as well as global configuration, such as which global partitioner to use) is held by !DatabaseDescriptor. Per-KS, per-CF, and per-Column metadata are all stored as parts of the Schema: KSMetadata, CFMetadata, !ColumnDefinition. See also ConfigurationNotes. - = Some historial baggage = + = Some historical baggage = * Some classes have misleading names, notably !ColumnFamily (which represents a single row, not a table of data) and, prior to 2.0, Table (which was renamed to Keyspace). = Write path =
