QLess
QLess specializes in queue management and appointment scheduling software. Through queue management software, customers are empowered to wait wherever they want: at home, work, or even Starbucks – instead of a crowded lobby. To begin, customers join a virtual queue online. They are given a wait time forecast and timely notifications alert customers as they move to the front of the queue. With appointment scheduling software, customers book an appointment for a future day and time. Meanwhile, you are able to accept walk-ins as schedule openings occur. As the time of the customer’s appointment approaches, QLess automatically places the customer in the virtual queue of your software. Interactive appointment scheduling software offers bi-directional communication, connecting your staff with customers. If a customer is running late, they can request more time. Likewise, your staff can notify the customer if your office is behind schedule.
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Amazon Simple Queue Service (SQS)
Amazon Simple Queue Service (SQS) is a fully managed message queuing service that enables you to decouple and scale microservices, distributed systems, and serverless applications. SQS eliminates the complexity and overhead associated with managing and operating message oriented middleware, and empowers developers to focus on differentiating work. Using SQS, you can send, store, and receive messages between software components at any volume, without losing messages or requiring other services to be available. Get started with SQS in minutes using the AWS console, Command Line Interface or SDK of your choice, and three simple commands. Use Amazon SQS to transmit any volume of data, at any level of throughput, without losing messages or requiring other services to be available. SQS lets you decouple application components so that they run and fail independently, increasing the overall fault tolerance of the system.
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IronMQ
MQ provides a reliable way to communicate between services and components. Highly available, persistent by design, with best-effort one-time delivery, MQ is the most industrial-strength, cloud-native solution for modern application architecture. Supports a rich set of features including push and pull queues, long polling, error queues, alerts and triggers, and more. MQ is a global service that runs on multiple clouds and availability zones. For advanced users with critical messaging needs, queues can automatically point to alternative zones in case of an outage without having to change any code. Runs on top of cloud infrastructure and uses multiple high-availability data centers. MQ scales without the need for you to add and maintain resources yourself. Uses HTTPS/Rest-based APIs for simple and efficient cloud use. Built with MQ standards in mind for maximum flexibility and configuration.
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Yandex Message Queue
Use standard or FIFO (first in, first out) queues depending on the number of RPS (requests per second). Use familiar tools for interacting with Amazon SQS, the HTTP API, CLI, and libraries for various programming languages. Message Queue uses fast NVMe-enabled solid-state drives to store messages. Messages are stored as multiple copies in geographically distributed availability zones. This ensures reliable storage and low latency with write confirmations. Message Queue is integrated with cloud functions, a trigger invokes a function that handles messages from a queue. Create a queue and view the number of messages and call duration in statistics. Consumers read messages from a standard queue in random order. Standard queues guarantee that each message is delivered at least once. In rare cases, a message can be received from a standard queue twice. Use standard queues when you need maximum throughput.
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