April 2025
Intermediate to advanced
432 pages
13h 18m
Italian
book
Cassandra: The Definitive Guide, (Revised) Third Edition, 3a edizione
by Jeff Carpenter, Eben Hewitt
Content preview from Cassandra: The Definitive Guide, (Revised) Third Edition, 3a edizione
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Capitolo 6. L'architettura di Cassandra
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3.2 Architettura: concetti o proprietà fondamentali di un sistema nel suo ambiente, incarnati nei suoi elementi, nelle sue relazioni e nei principi della sua progettazione ed evoluzione.
ISO/IEC/IEEE 42010
In questo capitolo esaminiamo diversi aspetti dell'architettura di Cassandra per capire come svolge il suo lavoro. Spiegheremo la topologia di un cluster e come i nodi interagiscono in un design peer-to-peer per mantenere la salute del cluster e scambiare dati, utilizzando tecniche come il gossip, la riparazione, l'handoff suggerito e le transazioni leggere. Guardando all'interno del design di un nodo, esaminiamo le tecniche di architettura che Cassandra utilizza per supportare la lettura, la scrittura e la cancellazione dei dati ed esaminiamo come queste scelte influenzino considerazioni architettoniche come la scalabilità, la durabilità, la disponibilità, la gestibilità e altro ancora. Impareremo anche a conoscere le strutture dati all'interno di un nodo, tra cui i registri di commit, le memtables, le cache e le SSTables.
Mentre presentiamo questi argomenti, forniamo anche i riferimenti per trovare le loro implementazioni nel codice sorgente di Cassandra.
Centri dati e rack
Cassandra viene spesso utilizzato in sistemi che si estendono su sedi fisicamente separate. Cassandra prevede due livelli ...
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