square/tape

Health v2 · maintenance only

Flags: no_releases archived

Adoption not part of the score

2455 stars · 282 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Tape is a Java library from Square providing QueueFile, a fast, transactional, file-based FIFO queue with atomic O(1) add/remove operations, plus ObjectQueue for arbitrary objects backed by disk or memory. It is designed to survive process and system crashes, making it well suited for reliable background task queuing on Android.

Use cases

• persist a task queue that survives app crashes on Android
• reliable background upload queue for photos
• file-based FIFO queue in Java
• queue work items to disk before processing
• durable message queue without a database

When to choose

• you need a small, dependency-free persistent FIFO on Android or the JVM
• you need crash-safe, atomic queue operations backed by a single file
• you want an in-memory or disk-backed object queue with a simple API

When to avoid

• you need a distributed or multi-consumer message broker
• your file system lacks atomic segment writes and you need power-loss durability
• you need high-throughput concurrent producers and consumers

Facets

library · maturity maintenance

message-queue serialization file-system mobile-development developer-tools files jvm fifo-queue persistent-queue transactional-io android java

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markdown · JSON · MCP: product_card(name="square/tape")