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É oferecida, no App Engine, uma opção entre dois ambientes para aplicativos Java: o ambiente padrão e o ambiente flexível. Ambos os ambientes têm o mesmo fluxo de trabalho de desenvolvedor, centrado em códigos, escalonamento rápido e eficiente, para lidar com a demanda crescente. É permitido o uso da tecnologia comprovada, disponibilizada pelo Google, para criar aplicativos da Web, móveis e de IoT rapidamente e com a mínima sobrecarga operacional. Embora os ambientes disponíveis tenham muito em comum, eles diferem em alguns pontos importantes.
Escolha seu ambiente preferido
Ambiente padrão
Otimizado para dimensionar quase instantaneamente, de forma a lidar com grandes picos de tráfego.
Mais rentável para aplicativos que passam por períodos significativos sem gerar tráfego.
Ambiente de execução do Java baseado no OpenJDK compatível com a biblioteca Java pública padrão.
Não impõe um gerenciador de segurança: o código não será limitado por problemas de permissões do Java.
Tempos de execução de linguagens de código aberto completos.
Use qualquer biblioteca ou binário que preferir.
O código pode ser usado em qualquer lugar compatível com contêineres do Docker.
Mais econômico para aplicativos que geram tráfego continuamente.
Sem nível gratuito. O aplicativo sempre tem um número mínimo de instâncias em execução.
Mais econômico para aplicativos que geram tráfego continuamente.
[[["Fácil de entender","easyToUnderstand","thumb-up"],["Meu problema foi resolvido","solvedMyProblem","thumb-up"],["Outro","otherUp","thumb-up"]],[["Difícil de entender","hardToUnderstand","thumb-down"],["Informações incorretas ou exemplo de código","incorrectInformationOrSampleCode","thumb-down"],["Não contém as informações/amostras de que eu preciso","missingTheInformationSamplesINeed","thumb-down"],["Problema na tradução","translationIssue","thumb-down"],["Outro","otherDown","thumb-down"]],[],[[["\u003cp\u003eApp Engine provides two environments for Java applications: standard and flexible, both offering rapid scaling and efficient handling of traffic.\u003c/p\u003e\n"],["\u003cp\u003eThe standard environment is optimized for handling traffic spikes and is most cost-effective for applications with periods of inactivity, featuring a free tier and an OpenJDK-based Java runtime.\u003c/p\u003e\n"],["\u003cp\u003eThe flexible environment allows for the use of any framework, library, or binary, with code portability through Docker containers, and is best for applications with continuous traffic, though it lacks a free tier.\u003c/p\u003e\n"],["\u003cp\u003eWhile both environments are Ubuntu OS-based, they differ in their cost structures, runtime restrictions, and suitability for different traffic patterns.\u003c/p\u003e\n"],["\u003cp\u003eThe Java 8 runtime in the standard environment is no longer supported, and more details are available in the official documentation.\u003c/p\u003e\n"]]],[],null,["# Java on Google App Engine\n\nApp Engine offers you a choice between two environments for Java applications: standard environment and flexible environment. Both environments have the same code-centric developer workflow, scale quickly and efficiently to handle increasing demand, and enable you to use Google's proven serving technology to build your web, mobile, and IoT applications quickly and with minimal operational overhead. While the available environments have a lot in common, they differ in a few important ways. \n\nChoose your preferred environment\n---------------------------------\n\n### Standard environment\n\n- Optimized to scale nearly instantaneously to handle huge traffic spikes.\n\n- Most cost-effective for applications that have significant periods where they\n are not serving traffic.\n\n- OpenJDK based Java runtime supports the standard public Java library.\n\n- Doesn't impose a security manager--your code won't be restricted by Java\n permissions issues.\n\n- [Free tier](/appengine/pricing).\n\n- Ubuntu OS\n\n- The Java 8 runtime is [no longer supported](/appengine/docs/standard/lifecycle/support-schedule#java).\n\n[View Docs](/appengine/docs/standard/java-gen2/runtime) \n\n### Flexible environment\n\n- Full [open source](http://github.com/GoogleCloudPlatform/) language runtimes.\n\n- Use any framework, library, or binary of your choice.\n\n- Code is portable to anywhere that supports Docker containers.\n\n- Most cost-effective for applications that serve traffic continuously.\n\n- No free tier. Application always has a minimum number of running instances.\n Most cost-effective for applications that serve traffic continuously.\n\n- Ubuntu OS\n\n[View docs](/appengine/docs/flexible/java/dev-jetty9) \n\nChoosing an environment\n-----------------------\n\nYou can run an App Engine application in two environments, the standard environment and the flexible environment. See a summary of differences between the two environments.\n[Learn more](/appengine/docs/the-appengine-environments)"]]
