April 2025
Intermediate to advanced
450 pages
14h 46m
Italian
Content preview from Prestazioni Java, 2a edizione
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Capitolo 11. Migliori pratiche per le prestazioni del database
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Questo capitolo analizza le prestazioni delle applicazioni di database basate su Java. Le applicazioni che accedono a un database sono soggette a problemi di prestazioni non legati a Java: se un database è delimitato dall'I/O o se esegue query SQL che richiedono la scansione completa di una tabella perché manca un indice, nessun intervento di messa a punto di Java o di codifica dell'applicazione risolverà i problemi di prestazioni. Quando hai a che fare con le tecnologie di database, preparati a imparare (da un'altra fonte) come sintonizzare e programmare il database.
Questo non significa che le prestazioni di un'applicazione che utilizza un database siano insensibili agli aspetti sotto il controllo della JVM e delle tecnologie Java utilizzate. Piuttosto, per ottenere buone prestazioni, è necessario assicurarsi che sia il database che l'applicazione siano sintonizzati correttamente ed eseguano il miglior codice possibile.
Questo capitolo inizia con un'analisi dei driver JDBC, poiché questi influenzano i framework di dati che parlano con i database relazionali. Molti framework astraggono i dettagli JDBC, compresi i moduli dati JPA e Spring.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.