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Technical Vocabularynoun|verb · /kjuː/

queue

In simple English

In software engineering, a queue is a fundamental data structure used to manage tasks, messages, or data in the order they arrive. Think of it like a line at a coffee shop: the first person to arrive is served first. Queues are essential in many systems including message brokers (like RabbitMQ or Kafka), job schedulers, and asynchronous processing systems. When you queue something, you are adding it to a list to be processed later in order. In team communication, developers often say they will queue a task or feature, meaning they will add it to the backlog or schedule it for future work. Understanding queues is critical for building scalable systems that handle concurrent requests efficiently.

What is a queue data structure and how is it used in software development?

At a glanceCEFR B2
Commonness4/5
Versatility4/5
FormalityCasualFormalNeutral
Spoken ↔ WrittenSpokenWrittenBoth
Directness ↔ DiplomaticDirectDiplomaticDirect
RegionUS and UK
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Say it like this

Add to the queue
Process the queue
Queue up a task
Clear the queue
Queue management

Real examples

in a standup

"We have several bug fixes queued for the next release."

in a code review

"This method dequeues messages from the priority queue in the correct order."

in a team meeting

"Let me queue this feature request so we can discuss it in the backlog refinement session."

Don't say this

Handle with care. Non-native speakers sometimes confuse queue (data structure) with queue (waiting line). In tech, it almost always means the data structure unless discussing customer support or ticketing systems.

We queued all users waiting for the website.
All users are waiting in line for the website.Queue as a data structure is not used for physical lines of people in tech contexts. Use it for data or tasks only.
The queue will process items randomly.
The queue will process items in FIFO order.A queue by definition processes items in the order they were added, not randomly. If you need random access, use a different data structure.
I queued the message but it processed immediately.
I added the message to the queue, but it processed immediately because the queue was empty.Queuing does not guarantee a delay; if the queue is empty, processing may happen right away.

Other forms

noun

queue

"The message queue stores items waiting for processing."

verb

queue

"We queue the request and process it asynchronously."

verb (past)

queued

"The task was queued yesterday and processed this morning."

noun

queuing

"Queuing theory helps us optimize system performance."

Often used with

message queueA queue used specifically for passing messages between services or systems
priority queueA queue where items are processed based on priority rather than strict FIFO order
queue lengthThe number of items currently waiting in a queue
enqueueTo add an item to a queue
dequeueTo remove an item from a queue
queue upTo add something to a waiting list or schedule

Similar words

bufferA temporary storage area; less formal but similar concept in some contexts
backlogItems waiting to be processed; used in project management and product development contexts
stackSimilar data structure but uses LIFO order instead of FIFO

Opposites

stackimmediate execution

Practice

Try it

4 quick exercises

Pick the most natural phrasing

1. Your team needs to handle incoming requests in order. How do you describe this?

Complete the sentence

2. When a user submits a form, we _______ the data to the message broker for asynchronous processing.

Spot the mistake

3. Which sentence uses queue incorrectly?

Rewrite naturally

4. Rewrite this in natural tech English using queue: 'We add the task to a list and process each one after the other in the order it was added.'

Questions

Quick poll

Have you said "queue" in a standup this week?

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