queuelib
Collection of persistent (disk-based) and non-persistent (memory-based) queues
Decision gist · record as of 2026-08-14
Yes. Queuelib is actively maintained, has no dependencies, supports current Python versions, carries no known vulnerabilities, and offers a straightforward solution for persistent and in-memory queuing. Install it if you need disk-backed queues or priority/round-robin scheduling; skip it if you require thread-safety or distributed queue semantics.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.10 or later.
- Collections are not thread-safe.
- Low friction: pure Python, no runtime dependencies, and actively maintained with recent releases.
License · maintenance · safety
BSD-3-Clause (permissive) — BSD-3-Clause permissive license allows use in commercial and proprietary projects with minimal restrictions.
last release 2026-01-29 (197 days) · last repo commit 2026-07-31 · 299 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 3,117,427 downloads/mo, #2,746 on PyPI
Alternatives
Verify before relying
pip install queuelib
from queuelib import FifoDiskQueue
q = FifoDiskQueue('queuefile')
q.push(b'item')
item = q.pop()
q.close()- Whether disk-persisted queues survive process crashes or only graceful shutdown
- Performance characteristics at scale (queue size, throughput limits)
- Thread-safety workarounds or recommended patterns for concurrent access
What it is and what it does
Queuelib is a collection library that implements standard queue data structures—FIFO queues, LIFO stacks, priority queues, and round-robin queues—with the option to store them in memory or persist them to disk. Each collection type exposes a simple push/pop API and is designed for speed. The library has no external dependencies and supports modern Python versions from 3.10 onward.
It is typically used in scenarios where you need a durable work queue that survives process restarts, or where you want to manage items with priority or fair distribution across multiple sources. The disk-based variants allow you to queue large numbers of items without keeping them all in RAM, making it useful for batch processing, task scheduling, and buffering workloads.
Use it for
- Persist task queues to disk in web scrapers or background job systems to survive restarts
- Implement priority-based work distribution where higher-priority tasks are processed first
- Fair-share scheduling across multiple data sources using round-robin dequeuing
- Buffer large datasets on disk when processing streams that exceed available memory
- Build durable message queues for offline-first or resilient data pipelines
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes.
Queuelib is actively maintained, has no dependencies, supports current Python versions, carries no known vulnerabilities, and offers a straightforward solution for persistent and in-memory queuing. Install it if you need disk-backed queues or priority/round-robin scheduling; skip it if you require thread-safety or distributed queue semantics.
Install
queuelib on PyPI
Before you install
Low friction: pure Python, no runtime dependencies, and actively maintained with recent releases. Supports Python 3.10 through 3.14 and PyPy.
Requires Python 3.10 or later. Collections are not thread-safe.
License in practice
BSD-3-Clause permissive license allows use in commercial and proprietary projects with minimal restrictions.
Quickstart
pip install queuelib
from queuelib import FifoDiskQueue
q = FifoDiskQueue('queuefile')
q.push(b'item')
item = q.pop()
q.close()Verify before relying
- Whether disk-persisted queues survive process crashes or only graceful shutdown
- Performance characteristics at scale (queue size, throughput limits)
- Thread-safety workarounds or recommended patterns for concurrent access
Package facts
| License | BSD-3-Clause permissive |
| Python support | Supports the current Python release >=3.10 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | None |
| Maintenance | Actively maintained 197 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 3,117,427 / month, #2,746 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/StableOperating System :: OS IndependentProgramming Language :: PythonProgramming Language :: Python :: 3Programming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.14Programming Language :: Python :: Implementation :: CPythonProgramming Language :: Python :: Implementation :: PyPy |
Evidence: queuelib-1.9.0-py3-none-any.whl
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See also HeapDict · persist-queue · azure-storage-queue · redis-simple-mq · cacheout · bullmq · arq · janus · roundrobin · sortedcontainers