Android service
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An Android service is an application component that can perform long-running operations in the background without a user interface. Services have higher priority than activities and are used for tasks like media playback, file downloading, etc. Services run independently of any activity and can be started by calling startService() or bound to other components using bindService(). Services run on the main thread by default so background tasks require a separate thread.
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Running Code in the Android Stack at ABS 2014
This document provides an overview of running code in the Android stack, covering various topics:
1) It discusses the different programming languages and components used to build Android applications and the platform itself, including Java, C/C++, and various Android app components.
2) It outlines standard app mechanisms like intents, components, processes and threads that apps use to integrate with the Android system.
3) It briefly covers some special app mechanisms like services, content providers and widgets.
Architecture your android_application
The document discusses various architectural concepts for Android applications including:
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3) The speaker demonstrates a framework for managing application state and communication between components using message queues, services, and bindings. Sample code is provided on GitHub.
Running Code in the Android Stack at ELCE 2013
This document provides an overview of running code in the Android software stack. It discusses the various programming languages and mechanisms used, including Java, C/C++, and scripting languages. It also covers starting applications, system services, libraries, and more. The overall goal is to explain how to develop and integrate code at all levels of the Android operating system.
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[SC London] "Testing Microservices: from Development to Production
Dividing a system into a series of services that communicate over an unreliable network naturally creates challenging conditions for testing inter-service interactions. Each service has its own functional requirements, and performance and fault-tolerance characteristics that need to be validated during development, the QA process, and continually in production. Join Daniel Bryant to learn about the theory, techniques, and practices that can help to overcome these challenges.
Overview and learning Outcomes:
• Introduction to the challenges of testing distributed microservice systems
• Learn tactics for isolating tests within a complex microservice ecosystem
• Join a whistle-stop tour of consumer-driven contract testing and API simulation
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Introduction to Android Development
This document provides an overview of Android development. It discusses the core components of an Android app including activities, services, content providers, and broadcast receivers. It also covers key concepts like the application lifecycle, intents, and processes/threads. The session aims to give an introduction to the Android ecosystem and components, explain how to create a simple app, and include socializing with beer breaks.
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Inngest is a developer platform that enables running reliable serverless background functions triggered by events or cron and deployed to any platform. It provides the best of queues and event streams by using an event stream with queues under the hood. Functions are broken into short steps that can each be retried independently if they fail, ensuring reliability. Functions can pause execution by waiting for additional events using step.waitForEvent(), allowing for coordination between events. Inngest also supports cron jobs, scheduling functions to run in the future, and processing high volumes of events like webhooks.
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Embedded Android : System Development - Part IV (Android System Services)
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Folding is a recent technique for building efficient recursive SNARKs. Several elegant folding protocols have been proposed, such as Nova, Supernova, Hypernova, Protostar, and others. However, all of them rely on an additively homomorphic commitment scheme based on discrete log, and are therefore not post-quantum secure. In this work we present LatticeFold, the first lattice-based folding protocol based on the Module SIS problem. This folding protocol naturally leads to an efficient recursive lattice-based SNARK and an efficient PCD scheme. LatticeFold supports folding low-degree relations, such as R1CS, as well as high-degree relations, such as CCS. The key challenge is to construct a secure folding protocol that works with the Ajtai commitment scheme. The difficulty, is ensuring that extracted witnesses are low norm through many rounds of folding. We present a novel technique using the sumcheck protocol to ensure that extracted witnesses are always low norm no matter how many rounds of folding are used. Our evaluation of the final proof system suggests that it is as performant as Hypernova, while providing post-quantum security.
Paper Link: https://eprint.iacr.org/2024/257
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DLAU und die Lizenzen nach dem CCB- und CCX-Modell sind für viele in der HCL-Community seit letztem Jahr ein heißes Thema. Als Notes- oder Domino-Kunde haben Sie vielleicht mit unerwartet hohen Benutzerzahlen und Lizenzgebühren zu kämpfen. Sie fragen sich vielleicht, wie diese neue Art der Lizenzierung funktioniert und welchen Nutzen sie Ihnen bringt. Vor allem wollen Sie sicherlich Ihr Budget einhalten und Kosten sparen, wo immer möglich. Das verstehen wir und wir möchten Ihnen dabei helfen!
Wir erklären Ihnen, wie Sie häufige Konfigurationsprobleme lösen können, die dazu führen können, dass mehr Benutzer gezählt werden als nötig, und wie Sie überflüssige oder ungenutzte Konten identifizieren und entfernen können, um Geld zu sparen. Es gibt auch einige Ansätze, die zu unnötigen Ausgaben führen können, z. B. wenn ein Personendokument anstelle eines Mail-Ins für geteilte Mailboxen verwendet wird. Wir zeigen Ihnen solche Fälle und deren Lösungen. Und natürlich erklären wir Ihnen das neue Lizenzmodell.
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Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-and-domino-license-cost-reduction-in-the-world-of-dlau/
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In summary, DeFi in 2024 is not just a trend; it’s a revolution that democratizes finance, enhances security and transparency, and fosters continuous innovation. As we proceed through this presentation, we'll explore the various components and services of DeFi in detail, shedding light on how they are transforming the financial landscape.
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The original Czech 🇨🇿 version of the presentation can be found here: https://www.slideshare.net/slideshow/hlavni-novinky-souvisejici-s-ccs-tsi-2023-2023-1695/269688092 .
The videorecording (in Czech) from the presentation is available here: https://youtu.be/WzjJWm4IyPk?si=SImb06tuXGb30BEH .
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Android service
- 2. Service ● Application component that can perform long-running operations in the background ● Does not provide a user interface ● Has more priority than hidden activity ● Used on… ○ Media player ○ File downloader ○ etc
- 3. ● Life cycle ○ Service starts running when startService() / bindService() is called ○ Service is running even if called component is destroyed ○ It needs to be shutdown by stopService() / stopSelf()
- 4. ● Class extends android.Service ● Runs on main thread of their hosting process ● Android UI is also running on main thread, so to handle UI actions while service, it needs to be running on seperate thread
- 5. ● startService ○ Start single service which runs on background ○ Cannot control. Only can check start/stop MainActivity.java LocalService.java
- 6. ● bindService ○ bindService is for connecting service to other component ○ Needs to implement onBind to send IBinder instance ● Binder ○ Connect resource / class on other process ○ Allow to use method on other process
- 7. ● Call bindService from other component to connect on service ● Receive IBinder by onServiceConnected on ServiceConnection ● Control method on service by received instance
- 8. ● Return value of onStartCommand() START_STICKY If this service's process is killed while it is started (after returning from onStartCommand(Intent, int, int)), then leave it in the started state but don't retain this delivered intent. START_REDELIVER_INTENT if this service's process is killed while it is started (after returning from onStartCommand(Intent, int, int)), then it will be scheduled for a restart and the last delivered Intent re-delivered to it again via onStartCommand(Intent, int, int) START_NOT_STICKY If this service's process is killed while it is started (after returning from onStartCommand(Intent, int, int)), and there are no new start intents to deliver to it, then take the service out of the started state and don't recreate until a future explicit call to Context. startService(Intent)