Analytics Vasiliki (Vasia) Kalavri
 vkalavri@bu.edu Spring 2020 1/28: Stream ingestion and pub/sub systems Streaming sources Files, e.g. transaction logs Sockets IoT devices and sensors Databases might process a message out-of-order or twice 14 How can we avoid this? 15 Publish/Subscribe Systems publisher publisher publisher publisher subscriber notify() subscriber notify() subscriber subscribe notify unsubscribe advertise(): information reg. future events Publish/Subscribe Systems 17 Pub/Sub levels of de-coupling • Space: interacting parties do not need to know each other • Publishers

#IstioCon Building resilient systems inside the mesh: abstraction and automation of Virtual Service generation Vladimir Georgiev, Thought Machine #IstioCon Sync calls failures inside the mesh

supports multiple hardware and software platforms, such as X86 and ARM CPU, Linux and Darwin operating systems. 3 BAETYL Documentation 1.2 Components As an edge computing platform, Baetyl not only provides docker container mode and the native process mode. • Services and System Relationships: Baetyl systems can start multiple services, there is no dependency between services, and their startup order should Master exposes a set of RESTful APIs, adopts HTTP/1. By default, Unix Domain Socket is used on Linux systems, and the fixed address is /var/run/baetyl.sock. Other environments use TCP. The default address is

supports multiple hardware and software platforms, such as X86 and ARM CPU, Linux and Darwin operating systems. Components As an edge computing platform, Baetyl not only provides features such as underlying the docker container mode and the native process mode. Services and System Relationships: Baetyl systems can start multiple services, there is no dependency between services, and their startup order should Master exposes a set of RESTful APIs, adopts HTTP/1. By default, Unix Domain Socket is used on Linux systems, and the fixed address is /var/run/baetyl.sock. Other environments use TCP. The default address is

supports multiple hardware and software platforms, such as X86 and ARM CPU, Linux and Darwin operating systems. Components As an edge computing platform, Baetyl not only provides features such as underlying the docker container mode and the native process mode. Services and System Relationships: Baetyl systems can start multiple services, there is no dependency between services, and their startup order should Master exposes a set of RESTful APIs, adopts HTTP/1. By default, Unix Domain Socket is used on Linux systems, and the fixed address is /var/run/baetyl.sock. Other environments use TCP. The default address is

supports multiple hardware and software platforms, such as X86 and ARM CPU, Linux and Darwin operating systems. 3 BAETYL Documentation 1.2 Components As an edge computing platform, Baetyl not only provides docker container mode and the native process mode. • Services and System Relationships: Baetyl systems can start multiple services, there is no dependency between services, and their startup order should Master exposes a set of RESTful APIs, adopts HTTP/1. By default, Unix Domain Socket is used on Linux systems, and the fixed address is /var/run/baetyl.sock. Other environments use TCP. The default address is

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.4 Supported Host Operating Systems . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.4.1 Host CPU Requirements . . . . . . . . VirtualBox . . . . . . . . . . 50 3 Configuring Virtual Machines 51 3.1 Supported Guest Operating Systems . . . . . . . . . . . . . . . . . . . . . . . . . 51 3.1.1 Mac OS X Guests . . . . . . . . . . (variant 3) . . . . . . . . . . . . 470 16.2.50 Digital Equipment Corporation and QuarterDeck Office Systems License 470 16.2.51 Hewlett-Packard License (variant 1) . . . . . . . . . . . . . . . . . . . . 471

enterprise ready platform. With this flexibility, Karaf is the perfect solution for microservices, systems integration, big data, and much more. Apache Karaf is powered by OSGi (but you don’t need to know karaf@root()> halt 3.2. Commands Karaf 4 commands are close to the ones provided in Karaf 3. The sub-shell modes are the same (in etc/org.apache.karaf.shell.cfg or using shell:completion command). However Requirements Hardware: • 50 MB of free disk space for the Apache Karaf binary distribution. Operating Systems: • Windows: Windows 8, Windows 7, Windows 2003, Windows Vista, Windows XP SP2, Windows 2000. •

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.4 Supported Host Operating Systems . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.4.1 Host CPU Requirements . . . . . . . . . . . . . . . . . . . . . 65 4 Configuring Virtual Machines 67 4.1 Supported Guest Operating Systems . . . . . . . . . . . . . . . . . . . . . . . . . 67 4.1.1 Mac OS X Guests . . . . . . . . . . (variant 3) . . . . . . . . . . . . 496 17.2.50 Digital Equipment Corporation and QuarterDeck Office Systems License 496 17.2.51 Hewlett-Packard License (variant 1) . . . . . . . . . . . . . . . . . . . . 497

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.4 Supported Host Operating Systems . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.4.1 Host CPU Requirements . . . . . . . . . . . . . . . . . . . . . 65 4 Configuring Virtual Machines 67 4.1 Supported Guest Operating Systems . . . . . . . . . . . . . . . . . . . . . . . . . 67 4.1.1 Mac OS X Guests . . . . . . . . . . (variant 3) . . . . . . . . . . . . 498 17.2.50 Digital Equipment Corporation and QuarterDeck Office Systems License 498 17.2.51 Hewlett-Packard License (variant 1) . . . . . . . . . . . . . . . . . . . . 499