Apache Pulsar vs Google Cloud Pub/Sub
On the evidence we track, Apache Pulsar leads this comparison with a composite score of 60/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.
Capabilities
Feature-by-feature on the axes that matter for message queues. “-” means undocumented, not absent.
What each one is
The product in its own terms, so the numbers below have context.
Apache Pulsar
LeaderA message broker supporting both pub-sub and queue-based messaging patterns. It provides durable storage with strong ordering guarantees, horizontally scales to millions of topics and messages per second, and supports geo-replication for distributed deployments.
Google Cloud Pub/Sub
Google Cloud's publish-subscribe messaging platform that delivers events to multiple subscribers with at-least-once delivery guarantees, cross-zone replication, and optional per-key ordering. It integrates with popular data processing, analytics, and monitoring tools for end-to-end data streaming solutions.
Pricing
List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.
Google Cloud Pub/Sub
Usage-based: $40/TiB throughput, $0.27/GiB-month storage. Free tier: 10 GiB/month throughput.
- Standard Pub/Sub$40/TiB throughput + $0.27/GiB-month storage (first 10 GiB throughput free)
- At-least-once message delivery
- Per-key message ordering
- Pull and push delivery modes
- Cross-zone replication
- Automatic scaling and provisioning
- +1 more
Platform & deployment
Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.
Integrations
What each product connects to. Counts come from the vendor's own integration directory where one exists.
Apache Pulsar
Leader- Kafka
- RabbitMQ
- MongoDB
- Cassandra
- Elasticsearch
- HBase
- HDFS
- InfluxDB
- Redis
- Solr
- DynamoDB
- Kinesis
- Azure Data Explorer
- ClickHouse
- PostgreSQL
- MariaDB
- SQLite
- Debezium MySQL
- Debezium PostgreSQL
- Debezium MongoDB
- Debezium Oracle
- Debezium Microsoft SQL Server
- Canal
- Aerospike
- +7 more
Google Cloud Pub/Sub
- BigQuery
- Cloud Storage
- Dataflow
- Splunk
- Datadog
- Striim
- Informatica
- Confluent Cloud
- Apache Kafka
- Knative Eventing
- Looker Studio
- Data Studio
Apache Pulsar or Google Cloud Pub/Sub: which one depends on you
A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.
Free to run, no account needed to start. How the evaluation works
Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.