---
id: google-cloud-pubsublite
version: "1.13.0"
license: Apache 2.0
license_treatment: permissive
maintenance: active
---

# google-cloud-pubsublite — Google Cloud Pubsublite API client library

License: permissive · Maintenance: active · Downloads: 3.2M/mo

## What it is and what it does

google-cloud-pubsublite is the official Python client for Google Cloud Pub/Sub Lite, a managed messaging service that decouples message producers from consumers. It provides publisher and subscriber APIs to send and receive messages through topics, enabling reliable asynchronous communication between distributed applications.

Pub/Sub Lite differs from standard Google Cloud Pub/Sub by offering partitioned zonal data storage with predefined capacity, making it suitable for workloads with predictable throughput patterns. The library wraps the underlying gRPC API and depends on google-cloud-pubsub, grpcio, and google-api-core to handle authentication, transport, and protocol details. It supports Python 3.8 and later versions.

Use it for:

- Building event-driven architectures where applications publish events to topics and multiple subscribers consume them independently.
- Implementing reliable message queuing for microservices that need decoupled, asynchronous communication.
- Streaming data pipelines where producers and consumers operate at different rates and need buffering.
- Real-time data ingestion systems that require partitioned storage with known capacity planning.
- Integrating with Google Cloud Dataflow or other GCP services for event processing workflows.

## Worth the install?

AI-flagged interpretation of the facts above — verify before relying.

Python client library for Google Cloud Pub/Sub Lite, providing asynchronous messaging between applications with partitioned zonal data storage and predefined capacity.

Yes. This is the official, actively maintained client for Pub/Sub Lite with low install friction, permissive licensing, no known vulnerabilities, and broad Python version support. Install it if you are building on Google Cloud Pub/Sub Lite; if you need standard Pub/Sub instead, use google-cloud-pubsub. Verify that Pub/Sub Lite's partitioned zonal model and usage caveats fit your workload before committing.

## Install

pip install google-cloud-pubsublite
uv add google-cloud-pubsublite
poetry add google-cloud-pubsublite

## Installing google-cloud-pubsublite

Before you install: Low friction installation via pip; actively maintained with recent releases. Depends on standard Google Cloud libraries (google-cloud-pubsub, grpcio, google-api-core) and proto-plus, all widely used and stable.

License in practice: Licensed under Apache 2.0 (permissive), allowing free use, modification, and distribution in both open-source and commercial projects with minimal restrictions.

Quickstart:

pip install google-cloud-pubsublite

from google.cloud.pubsublite.admin_client import AdminClient
from google.cloud.pubsublite.publisher_client import PublisherClient

admin = AdminClient()
publisher = PublisherClient()

Requires Google Cloud project with Pub/Sub Lite API enabled and authentication configured (service account key or Application Default Credentials).

Verify before relying:

- Whether the package supports async/await patterns or only callback-based publishing and subscribing.
- Performance characteristics and throughput limits compared to standard Google Cloud Pub/Sub.
- Whether automatic message batching and flow control are configurable.

## Package facts

- License: Apache 2.0 (permissive)
- Python support: supports_current
- Install friction: low
- Maintenance: active
- Downloads: 3.2M/month (top 5,000 on PyPI)
- Known vulnerabilities: none known

## Tags

google cloud pubsub lite client, asynchronous messaging python, pub sub lite api, google cloud messaging library, partitioned message queue, cloud pubsub lite python, many-to-many messaging, topic-based message broker, google-cloud, messaging-queue, async-io

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