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FaaS
Function as a service is a "platform-level cloud capability" that enables its users "to build and manage microservices applications with low initial investment for scalability," according to ISO/IEC 22123-2. Function as a Service is a subset of the serverless computing ecosystem. Anti-patterns The "Grain of Sand Anti-pattern" refers to the creation of excessively small components (e.g., functions) within a system, often resulting in increased complexity, operational overhead, and performance inefficiencies. "Lambda Pinball" is a related anti-pattern that can occur in serverless architectures when functions (e.g., AWS Lambda, Azure Functions) excessively invoke each other in fragmented chains, leading to latency, debugging and testing challenges, and reduced observability. These anti-patterns are associated with the formation of a distributed monolith. These anti-patterns are often addressed through the application of clear domain boundaries, which distinguish between public and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Serverless Computing
Serverless computing is "a cloud service category in which the customer can use different cloud capability types without the customer having to provision, deploy and manage either hardware or software resources, other than providing customer application code or providing customer data. Serverless computing represents a form of virtualized computing." according to ISO/IEC 22123-2. Serverless computing is a broad ecosystem that includes the cloud provider, Function as a Service, managed services, tools, frameworks, engineers, stakeholders, and other interconnected elements, according to Sheen Brisals. Overview ''Serverless'' is a misnomer in the sense that servers are still used by cloud service providers to execute code for developers. The definition of serverless computing has evolved over time, leading to varied interpretations. According to Ben Kehoe, serverless represents a spectrum rather than a rigid definition. Emphasis should shift from strict definitions and specific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
As A Service
" as a service" (rendered as *aaS in acronyms) is a phrasal template for any business model in which a product use is offered as a subscription-based service rather than as an artifact owned and maintained by the customer. The converse of conducting or operating something "as a service" is doing the same using "on-premise" assets (such as on-premises software) or lump sum investments. Originating from the software as a service concept that appeared in the 2010s with the advent of cloud computing, the template has expanded to numerous offerings in the field of information technology and beyond it. The term XaaS can mean "anything as a service". The following is an alphabetical list of business models named in this way, including certain forms of cybercrime (criminal business models). B Backend as a service (BaaS) Banking as a service (BaaS) Blockchain as a service (BaaS) C Content as a service (CaaS) Crimeware as a service D Data as a service (Daa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Serverless Computing
Serverless computing is "a cloud service category in which the customer can use different cloud capability types without the customer having to provision, deploy and manage either hardware or software resources, other than providing customer application code or providing customer data. Serverless computing represents a form of virtualized computing." according to ISO/IEC 22123-2. Serverless computing is a broad ecosystem that includes the cloud provider, Function as a Service, managed services, tools, frameworks, engineers, stakeholders, and other interconnected elements, according to Sheen Brisals. Overview ''Serverless'' is a misnomer in the sense that servers are still used by cloud service providers to execute code for developers. The definition of serverless computing has evolved over time, leading to varied interpretations. According to Ben Kehoe, serverless represents a spectrum rather than a rigid definition. Emphasis should shift from strict definitions and specific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AWS Lambda
AWS Lambda is an event-driven, serverless Function as a Service (FaaS) provided by Amazon as a part of Amazon Web Services. It is designed to enable developers to run code without provisioning or managing servers. It executes code in response to events and automatically manages the computing resources required by that code. It was introduced on November 13, 2014. Specification Each AWS Lambda instance runs within a lightweight, isolated environment powered by Firecracker microVMs. These microVMs are initialized with a runtime environment based on Amazon Linux (Amazon Linux AMI or Amazon Linux 2), a custom Linux distribution developed by AWS. Firecracker provides hardware-virtualization-based isolation, aiming to achieve near-bare-metal performance with minimal overhead. AWS claims that, unlike traditional virtual machines, these microVMs launch in milliseconds, enabling rapid and secure function execution with a minimal memory footprint. The Amazon Linux AMI is specifically ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hexagonal Architecture (software)
The hexagonal architecture, or ports and adapters architecture, is an architectural pattern used in software design. It aims at creating loosely coupled application components that can be easily connected to their software environment by means of ports and adapters. This makes components exchangeable at any level and facilitates test automation. Origin The hexagonal architecture was invented by Alistair Cockburn in an attempt to avoid known structural pitfalls in object-oriented software design, such as undesired dependencies between layers and contamination of user interface code with business logic. It was discussed at first on the Portland Pattern Repository wiki; in 2005 Cockburn renamed it "Ports and adapters". In April 2024, Cockburn published a comprehensive book on the subject, coauthored with Juan Manuel Garrido de Paz. The term "hexagonal" comes from the graphical conventions that shows the application component like a hexagonal cell. The purpose was not to suggest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Serverless Framework
The Serverless Framework is a web framework written using Node.js. Serverless is the first framework developed for building applications on AWS Lambda, a serverless computing platform provided by Amazon as a part of Amazon Web Services. Currently, applications developed with Serverless can be deployed to other function as a service providers, including Microsoft Azure with Azure Functions, IBM Bluemix with IBM Cloud Functions based on Apache OpenWhisk, Google Cloud using Google Cloud Functions, Oracle Cloud using Oracle Fn, Kubeless based on Kubernetes, Spotinst and Webtask by Auth0. A Serverless app can simply be a couple of lambda functions to accomplish some tasks, or an entire back-end composed of hundreds of lambda functions. Serverless supports all runtimes offered within the cloud provider chosen. Serverless is developed by Austen Collins and maintained by a full-time team. It was first introduced in October 2015 under the name JAWS. References {{Reflist External ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
