Google Cloud Pub/Sub vs TIBCO FTL

Google Cloud Pub/Sub is a cloud messaging service for asynchronous communication between services that produce messages and those that process them. It is intended for service-to-service use, including streaming analytics, data integration, middleware, and parallel task queues, rather than direct communication with end users or IoT clients. Communication typically has latency around 100 milliseconds. Synchronous cross-zone replication and per-message receipt tracking provide at-least-once delivery; Dataflow supports exactly-once processing of Pub/Sub streams. There are no shards or partitions, and provisioning scales automatically after quota is set. Message controls include seek and replay, dead letter topics, and attribute-based filtering. Pub/Sub offers fine-grained access controls, end-to-end encryption, and HIPAA compliance. It supports REST and gRPC APIs and client libraries for seven languages; API keys are not supported for authentication. The maximum message size is 10 MB. The free monthly tier is free for the first 10 GB of data per month. Pay-as-you-go is $40 a month beyond 10 GB, with throughput listed at $40 per TB and storage at $0.27 per GiB-month.

TIBCO FTL is an application-to-application messaging system designed for low latency and high performance. Applications can exchange messages through brokers or directly with one another using peer-to-peer messaging. Messages contain named fields with typed values, and subscribers can use content matchers to select them. Persistence services retain messages for durable subscribers and replicate message and acknowledgement data across services for fault tolerance. API references are listed for C,.NET, Java, and Go; TIBCO also describes messaging for REST, web, and mobile-based devices. Security documentation covers authentication, authorization, TLS, secure transports, and server data directories. FTL channels enable publish-subscribe messaging among eFTL applications and between eFTL and FTL applications. Listed platforms include API, Linux, macOS, self-hosted, web, and Windows. The Community Edition is listed at free. Enterprise Edition pricing is on request, and a non-expired license is required to start it. TIBCO lists online support cases and live chat available around the clock for other assistance.