solace-pubsubplus
Solace Messaging API for Python.
Decision gist · record as of 2026-08-14
Yes, if you are already using or planning to deploy Solace Event Brokers and need Python client connectivity. The library is production-stable, permissively licensed, and has no runtime dependencies. However, the aging maintenance status (252 days since last release) and the multiprocessing incompatibility are real constraints—verify that your deployment model and Python patterns align before committing.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Python 3.6 or greater required.
- Cannot be used in applications that use the Python multiprocessing module.
- Medium install friction due to platform-specific wheels (macOS, Linux, Windows, ARM variants).
License · maintenance · safety
Apache 2.0 (permissive) — Apache 2.0 is permissive; you can use this package in commercial and proprietary projects with minimal restrictions, provided you include a copy of the license and note any modifications.
last release 2025-12-05 (252 days)
0 known vulnerabilities (OSV.dev, 2026-08-14) · 265,177 downloads/mo, #8,328 on PyPI
Alternatives
Verify before relying
pip install solace-pubsubplus
from solace.messaging.messaging_service import MessagingService
from solace.messaging.publisher.message_publisher import DirectMessagePublisher
service = MessagingService.builder().build()
service.connect()
publisher = service.create_direct_message_publisher_builder().build()
publisher.publish(message, destination)- Exact feature parity and performance characteristics compared to other Solace SDKs or competing message brokers.
- Whether the aging maintenance status (252 days) reflects active support or reduced development velocity.
- Community adoption and real-world production usage patterns beyond download counts.
What it is and what it does
Solace Messaging API for Python is a client library that connects Python applications to Solace Event Brokers. It provides four primary abstractions: MessagingService (connection management), MessagePublisher (direct or persistent send), MessageReceiver (direct or persistent receive), and Message (payload wrapper). The library supports two delivery modes—direct messaging for low-latency fire-and-forget patterns, and persistent messaging for guaranteed delivery even when receivers are offline. Messages can be queued on the broker and acknowledged by receivers.
The package is built on platform-specific wheels for macOS, Linux (x86_64 and ARM), and Windows, with no external runtime dependencies. It requires Python 3.6 or later and cannot coexist with Python's multiprocessing module in the same application. The API is maintained by Solace Corporation and documented at docs.solace.com.
Use it for
- Build event-driven microservices that publish and subscribe to topics on a Solace Event Broker.
- Implement reliable message queuing where offline receivers can retrieve stored messages upon reconnection.
- Create low-latency pub-sub applications using DirectMessagePublisher for messages that don't require persistence.
- Integrate Python applications into existing Solace messaging infrastructure for enterprise event streaming.
- Develop multi-pattern messaging workflows combining direct and persistent delivery in the same application.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you are already using or planning to deploy Solace Event Brokers and need Python client connectivity.
The library is production-stable, permissively licensed, and has no runtime dependencies. However, the aging maintenance status (252 days since last release) and the multiprocessing incompatibility are real constraints—verify that your deployment model and Python patterns align before committing.
Install
solace-pubsubplus on PyPI
Before you install
Medium install friction due to platform-specific wheels (macOS, Linux, Windows, ARM variants). No runtime dependencies to manage. Maintenance status is aging—252 days since last release—though the package is marked Production/Stable and supports current Python versions.
Python 3.6 or greater required. Cannot be used in applications that use the Python multiprocessing module.
License in practice
Apache 2.0 is permissive; you can use this package in commercial and proprietary projects with minimal restrictions, provided you include a copy of the license and note any modifications.
Quickstart
pip install solace-pubsubplus
from solace.messaging.messaging_service import MessagingService
from solace.messaging.publisher.message_publisher import DirectMessagePublisher
service = MessagingService.builder().build()
service.connect()
publisher = service.create_direct_message_publisher_builder().build()
publisher.publish(message, destination)Verify before relying
- Exact feature parity and performance characteristics compared to other Solace SDKs or competing message brokers.
- Whether the aging maintenance status (252 days) reflects active support or reduced development velocity.
- Community adoption and real-world production usage patterns beyond download counts.
Package facts
| License | Apache 2.0 permissive |
| Python support | Supports the current Python release >=3.6 |
| Install friction | Medium. Platform-specific wheel |
| Runtime dependencies | None |
| Maintenance | Aging 252 days since the last release |
| First released | |
| Downloads | 265,177 / month, #8,328 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 5 - Production/StableIntended Audience :: DevelopersLicense :: OSI Approved :: Apache Software LicenseOperating System :: MacOS :: MacOS XOperating System :: Microsoft :: Windows :: Windows 10Operating System :: POSIX :: LinuxProgramming Language :: Python :: 3.10Programming Language :: Python :: 3.6Programming Language :: Python :: 3.7Programming Language :: Python :: 3.8Programming Language :: Python :: 3.9Topic :: Software Development :: Libraries :: Application FrameworksTopic :: Software Development :: Libraries :: Python Modules |
Evidence: solace_pubsubplus-1.11.0-py36-none-macosx_11_0_universal2.whl; solace_pubsubplus-1.11.0-py36-none-manylinux_2_12_x86_64.whl; solace_pubsubplus-1.11.0-py36-none-manylinux_2_17_aarch64.whl; solace_pubsubplus-1.11.0-py36-none-musllinux_1_2_x86_64.whl; solace_pubsubplus-1.11.0-py36-none-win32.whl; solace_pubsubplus-1.11.0-py36-none-win_amd64.whl
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See also google-cloud-pubsublite · gcloud-aio-pubsub · oslo.messaging · pubnub · Pypubsub · python-qpid-proton · azure-servicebus · firebase-messaging · google-cloud-pubsub · nats-py