September 2024
Intermediate to advanced
450 pages
14h 48m
German
Content preview from Java Performance, 2. Auflage
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Kapitel 10. Java-Server
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In diesem Kapitel geht es um Themen rund um Java-Servertechnologien. Im Kern geht es bei diesen Technologien darum, wie man Daten zwischen Clients und Servern überträgt, meist über HTTP. Daher liegt der Schwerpunkt dieses Kapitels auf Themen, die für die allgemeine Servertechnologie gelten: die Skalierung von Servern mithilfe verschiedener Thread-Modelle, asynchrone Antworten, asynchrone Anfragen und die effiziente Verarbeitung von JSON-Daten.
Bei der Skalierung von Servern geht es vor allem um die effektive Nutzung von Threads, und diese Nutzung erfordert ereignisgesteuerte, nicht blockierende E/A. Traditionelle Java/Jakarta EE-Server wie Apache Tomcat, IBM WebSphere Application Server und Oracle WebLogic Server nutzen schon seit geraumer Zeit Java NIO APIs, um dies zu erreichen. Aktuelle Server-Frameworks wie Netty und Eclipse Vert.x isolieren die Komplexität der Java NIO-APIs, um benutzerfreundliche Bausteine für den Aufbau von Servern mit geringerem Platzbedarf bereitzustellen, und Server wie Spring WebFlux und Helidon bauen auf diesen Frameworks auf (beide nutzen das Netty-Framework), um skalierbare Java-Server bereitzustellen.
Diese neueren Frameworks bieten Programmiermodelle, die auf reaktiver Programmierung basieren. Im Kern basiert die reaktive Programmierung auf der Verarbeitung asynchroner Datenströme mithilfe ...
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