concurrency
gb/kˈɔŋkjɚənsi/ us/kˈɔŋkjɚənsi/
C1
英语
义项
0 个义项
名词
technical
C1
property
1
Overlapping execution in computing
the way a computer system works on several tasks at the same time or during overlapping time periods
用法模式：
[system/software] supports/uses concurrency; concurrency in [program/system]
常见错误：
Do not assume concurrency always means parallelism; concurrent work may be interleaved on one processor rather than truly simultaneous.
近义词
overlapping execution (descriptive and close in technical meaning)
|
multitasking (more general; often used for users, operating systems, or work habits)
|
parallelism (related, but usually means actual simultaneous execution, often on multiple cores)
反义词
sequential execution (tasks run one after another rather than overlapping)
|
serial execution (technical term for operations processed in a single sequence)
|
single-threaded execution (one thread of control, often with little or no concurrency)
搭配
handle concurrency
|support concurrency
|manage concurrency
|concurrency model
|concurrency control
|concurrency limit
|high concurrency
|concurrency issue
|concurrency bug
|database concurrency
主题
software
|computing
|programming
|systems
例句
- Modern web servers use concurrency to handle thousands of requests at once.
- The bug appeared only under high concurrency, when several threads updated the same record.
- Go and Erlang provide different approaches to concurrency.
学习者例句
- Concurrency lets the server work on many requests at once.
- The program has a concurrency bug.
名词
formal
C2
state
2
Happening at same time
the situation in which two or more things happen or exist at the same time
用法模式：
the concurrency of [things]; concurrency between [things]
常见错误：
In everyday English, overlap or happening at the same time is usually more natural than concurrency.
近义词
simultaneity (formal and very close in meaning)
|
co-occurrence (emphasizes that things occur together, often without implying a cause)
|
overlap (more common and practical; may refer to partial shared time)
反义词
sequence (events happen in order rather than at the same time)
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succession (one thing follows another)
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separation (things are kept apart in time or occurrence)
搭配
concurrency of events
|concurrency of factors
|concurrency of risks
|temporal concurrency
|apparent concurrency
|degree of concurrency
|concurrency between events
|concurrency with another process
主题
time
|analysis
|formal_writing
例句
- The concurrency of heat, drought, and high winds made the fire season unusually dangerous.
- The study examined the concurrency between unemployment and poor health.
- The scheduling tool shows the concurrency of tasks on a timeline.
学习者例句
- The concurrency of the storms caused delays.
- Concurrency means the events happened together.
名词
formal
C2
relation
3
Agreement of views or decisions
agreement between people, ideas, or decisions, though agreement or concurrence is usually more natural
用法模式：
concurrency of [views/opinions]; concurrency between [positions/decisions]
常见错误：
This sense is rare in modern English; use agreement or concurrence in ordinary writing.
近义词
concurrence (more common formal word for agreement)
|
agreement (plain and much more common)
|
accord (formal; suggests harmony or consistency)
反义词
disagreement (lack of shared opinion or decision)
|
dissent (open disagreement, especially with a decision or majority view)
|
divergence (movement or difference away from a shared view)
搭配
concurrency of views
|concurrency of opinion
|concurrency of judgment
|broad concurrency
|substantial concurrency
|concurrency between positions
主题
communication
|decision_making
|formal_writing
例句
- Despite their different methods, the two reviews showed a strong concurrency of judgment.
- The meeting produced an unusual concurrency of views across the departments.
- There was little concurrency between the minister's statement and the agency's recommendations.
学习者例句
- The managers showed concurrency of views on the plan.
语法
词典原形
concurrency
IPA
GB/kˈɔŋkjɚənsi/
US/kˈɔŋkjɚənsi/
音节与重音
con - cur - rency （3 个音节）
Stress on 1st syllable (con)
词形变化
Noun
- Base: concurrency
- Plural: concurrencies, concurrency
相关表达
concurrency control
1/kˈɔŋkjɚənsi kəntɹˈoʊl/
fixed phrase
technical
Coordinating simultaneous data access
ways to stop simultaneous computer operations from damaging or mixing up data
例句
- The database relies on concurrency control to keep transactions from corrupting shared data.
- Good concurrency control lets many users edit records without overwriting each other.
- The team added concurrency control after two updates were sometimes saved in the wrong order.
concurrency issue
1/kˈɔŋkjɚənsi ˈɪʃu/
fixed phrase
technical
Bug from overlapping operations
a computer bug caused by several tasks happening at the same time
例句
- The duplicate charges were traced to a concurrency issue in the payment service.
- Concurrency issues are hard to reproduce because they depend on timing.
- The developers fixed a concurrency issue that occurred when two users edited the same file.
concurrency limit
1/kˈɔŋkjɚənsi lˈɪmɪt/
fixed phrase
technical
Maximum simultaneous operations
the largest number of things a system lets run at the same time
例句
- The API has a concurrency limit of 20 requests per account.
- We raised the concurrency limit during the sale to reduce waiting times.
- If you exceed the concurrency limit, new jobs stay in the queue until one finishes.
concurrency model
1/kˈɔŋkjɚənsi mˈɑdəl/
fixed phrase
technical
System for managing concurrent work
the method a programming system uses to organize several tasks at the same time
例句
- Actors, threads, and async/await represent different concurrency models.
- Choosing the right concurrency model can make the code easier to reason about.
- JavaScript's event loop is a central part of its concurrency model.
high concurrency
1/hˈaɪ kˈɔŋkjɚənsi/
fixed phrase
technical
Many simultaneous system operations
a situation where many computer tasks or users are active at the same time
例句
- The server stayed stable under high concurrency during the ticket sale.
- High concurrency can expose timing bugs that never appear in simple tests.
- The new architecture was designed to handle high concurrency with fewer machines.
optimistic concurrency control
1/ˌɑptɪmˈɪstɪk kˈɔŋkjɚənsi kəntɹˈoʊl/
fixed phrase
technical
Conflict checking without early locks
a way to allow edits first and check later whether another edit caused a conflict
例句
- With optimistic concurrency control, the system checks the row version before saving.
- Optimistic concurrency control worked well because most users edited different records.
- The update failed because optimistic concurrency control detected a newer version of the document.
pessimistic concurrency control
1/pˌɛsəmˈɪstɪk kˈɔŋkjɚənsi kəntɹˈoʊl/
fixed phrase
technical
Conflict prevention with locks
a way to stop conflicts by locking data before people or programs change it
例句
- The bank used pessimistic concurrency control for transfers that changed account balances.
- Pessimistic concurrency control can reduce conflicts, but it may slow the system down.
- The application locked the record as part of its pessimistic concurrency control strategy.