Function as a Service (FaaS): Core Building Block of Serverless TechnologyWhat is FaaS?Simplest unit of work for building applications, microservices, or event-driven protocolsBasic workflow: Input → Logic → OutputCharacteristics of FaaSSimple and easily understandableHighly scalableQuick response timePopular FaaS Framework: AWS LambdaCan be attached to various services:S3 notifications (e.g., file uploads)SQS (Simple Queue Service) messagesEnables building infinitely scalable services with small response timesBest Languages for Serverless/FaaSRustGoAdvantages of Modern Compiled Languages for FaaSSpeedSafetyOptimal deployment characteristicsMillisecond response and invocation timesLow energy usageKey Considerations for FaaS DevelopmentFocus on maintenance over ease of buildingOptimize for low costs (financial and energy)Consider total cost of service over timeTakeawayWhen developing Function as a Service applications, prioritize long-term efficiency, maintenance, and cost-effectiveness over initial development ease. Choose languages and practices that support these goals in a serverless environment.
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