# BullMQ vs Solace

**Leader by Vioscale score:** BullMQ

| Attribute | BullMQ | Solace |
|---|---|---|
| **Vioscale score** | 60.9 (55% (medium)) | 39.4 (7% (low)) |
| activity.commits_last_30d | 100 | - |
| adoption.dependent_repos | 1,185 | - |
| adoption.github_stars | 9,333 | - |
| adoption.package_downloads_weekly | 8,237,365 | - |
| deployment.options | `{"self_hosted":true}` | `{"cloud":true,"self_hosted":true}` |
| description.long | An open source system for queueing and processing background tasks using Redis as the data store, with support for Node.js, Python, Rust, Elixir, and PHP applications. | A messaging service that enables developers to create event-driven applications and microservices using multiple programming languages and open protocols (MQTT, REST, JMS, proprietary Direct) across cloud and self-hosted deployment options. |
| features.capabilities | `{"hosting":"self","paradigm":"job_queue","persistent_log":true,"managed_offering":false}` | `{"hosting":"both","ordering":"per_partition","paradigm":"pubsub","protocol":"MQTT, REST, JMS, Direct","persistent_log":false,"consumer_groups":true,"managed_offering":true,"delivery_guarantee":"at_most_once","horizontal_scaling":true}` |
| integrations.count | - | 4 |
| integrations.list | - | `[{"name":"AWS"},{"name":"Kafka"},{"name":"Spark"},{"name":"IBM WebSphere"}]` |
| language.primary | TypeScript | - |
| license.spdx | MIT | - |
| platform.support | - | `{"cli":true,"linux":true}` |
| pricing | `{"type":"open_source","sourceUrl":"https://bullmq.io/","retrievedAt":"2026-08-14T08:33:58.453Z"}` | - |
| pricing.model | commercial | - |
| pricing.price_level | free | - |
| release.history | `[{"url":"https://github.com/taskforcesh/bullmq/releases/tag/v6.3.0","date":"2026-08-26T16:40:29Z","type":"stable","version":"v6.3.0"},{"url":"https://github.com/taskforcesh/bullmq/releases/tag/vex2.2.0","date":"2026-08-26T16:42:21Z","type":"stable","version":"vex2.2.0"},{"url":"https://github.com/taskforcesh/bullmq/releases/tag/v6.2.2","date":"2026-08-25T20:30:33Z","type":"stable","version":"v6.2.2"},{"url":"https://github.com/taskforcesh/bullmq/releases/tag/v6.2.1","date":"2026-08-25T07:11:23Z","type":"stable","version":"v6.2.1"},{"url":"https://github.com/taskforcesh/bullmq/releases/tag/vrs1.2.7","date":"2026-08-25T20:34:22Z","type":"stable","version":"vrs1.2.7"},{"url":"https://github.com/taskforcesh/bullmq/releases/tag/vpy3.0.6","date":"2026-08-25T20:31:43Z","type":"stable","version":"vpy3.0.6"},{"url":"https://github.com/taskforcesh/bullmq/releases/tag/vpy3.0.5","date":"2026-08-25T02:38:59Z","type":"stable","version":"vpy3.0.5"},{"url":"https://github.com/taskforcesh/bullmq/releases/tag/vnet1.1.1","date":"2026-08-25T20:35:42Z","type":"stable","version":"vnet1.1.1"},{"url":"https://github.com/taskforcesh/bullmq/releases/tag/vex2.1.3","date":"2026-08-25T20:33:24Z","type":"stable","version":"vex2.1.3"},{"url":"https://github.com/taskforcesh/bullmq/releases/tag/vrs1.2.6","date":"2026-08-23T04:34:15Z","type":"stable","version":"vrs1.2.6"},{"url":"https://github.com/taskforcesh/bullmq/releases/tag/v6.2.0","date":"2026-08-21T05:16:10Z","type":"stable","version":"v6.2.0"},{"url":"https://github.com/taskforcesh/bullmq/releases/tag/v6.1.2","date":"2026-08-16T08:08:13Z","type":"stable","version":"v6.1.2"},{"url":"https://github.com/taskforcesh/bullmq/releases/tag/vrs1.2.5","date":"2026-08-15T04:26:34Z","type":"stable","version":"vrs1.2.5"},{"url":"https://github.com/taskforcesh/bullmq/releases/tag/vex2.1.2","date":"2026-08-15T19:44:26Z","type":"stable","version":"vex2.1.2"},{"url":"https://github.com/taskforcesh/bullmq/releases/tag/vex2.1.1","date":"2026-08-15T04:25:36Z","type":"stable","version":"vex2.1.1"},{"url":"https://github.com/taskforcesh/bullmq/releases/tag/v6.1.1","date":"2026-08-14T03:26:07Z","type":"stable","version":"v6.1.1"},{"url":"https://github.com/taskforcesh/bullmq/releases/tag/vrs1.2.4","date":"2026-08-13T04:42:57Z","type":"stable","version":"vrs1.2.4"},{"url":"https://github.com/taskforcesh/bullmq/releases/tag/v6.1.0","date":"2026-08-12T04:03:20Z","type":"stable","version":"v6.1.0"},{"url":"https://github.com/taskforcesh/bullmq/releases/tag/vnet1.1.0","date":"2026-08-12T19:30:15Z","type":"stable","version":"vnet1.1.0"},{"url":"https://github.com/taskforcesh/bullmq/releases/tag/vex2.1.0","date":"2026-08-12T19:29:27Z","type":"stable","version":"vex2.1.0"}]` | - |
| reliability.status_page | yes | - |
| security.scorecard | 7.5 | - |
| security.soc2 | yes | - |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=bullmq&per_page=100","last_12m":0,"max_severity":null}` | - |

## Capabilities (Message Queues)

| Capability | BullMQ | Solace |
|---|:--:|:--:|
| **Core** |  |  |
| Messaging paradigm | Job / task queue | Pub/sub |
| **Correctness** |  |  |
| Delivery guarantee | - | At-most-once |
| Ordering guarantee | - | Per-partition |
| **Durability** |  |  |
| Durable replayable log | ✓ | ✗ |
| Message replay / rewind | - | - |
| **Interop** |  |  |
| Wire protocol | - | MQTT, REST, JMS, Direct |
| Kafka-protocol compatible | - | - |
| **Scale** |  |  |
| Partitioned horizontal scaling | - | ✓ |
| Geo / cross-region replication | - | - |
| **Consumption** |  |  |
| Consumer groups / competing consumers | - | ✓ |
| Dead-letter queue | - | - |
| **Deployment** |  |  |
| Managed cloud offering exists | ✗ | ✓ |
| Hosting | Self-hosted only | Cloud + self-hosted |
| **Processing** |  |  |
| Built-in stream processing | - | - |

*Source: Vioscale. Generated 2026-09-01T16:31:02.016Z. "-" = undocumented, not absent.*