System.Collections.Concurrent
NuGetv4.3.0Provides several thread-safe collection classes that should be used in place of the corresponding types in the System.Collections.NonGeneric and System.Collections packages whenever multiple threads are accessing the collection concurrently. Commonly Used Types: System.Collections.Concurrent.ConcurrentDictionary<TKey, TValue> System.Collections.Concurrent.ConcurrentQueue<T> System.Collections.Concurrent.ConcurrentBag<T> System.Collections.Concurrent.BlockingCollection<T> System.Collections.Concurrent.ConcurrentStack<T> When using NuGet 3.x this package requires at least version 3.4.
Not recommended for new projects
No — System.Collections.Concurrent should not be adopted for new projects. Last published 3537 days ago. No license declared — you have no explicit right to use this code.
- ?Adoption: grade ?, Not reported by this registry.
No download data reported for this package yet.
- FMaintenance: grade F, Failing.
Last published 3537 days ago.
- BWeight: grade B, Good.
Pulls in 14 transitive packages (at least — some of the tree is still being crawled).
- BSupply chain: grade B, Good.
This package has a single maintainer (bus factor of 1).
- FLicense: grade F, Failing.
No license declared — you have no explicit right to use this code.
Grades are computed deterministically from registry metadata collected by PackageGraph — downloads, dependents, publish dates, the resolved dependency tree, maintainer count, and declared licenses. No third-party scores are used.
Install cost
What you actually take on by adding System.Collections.Concurrent to a project.
Runtime packages this one declares itself.
Distinct packages in the full runtime tree, deduplicated the way a package manager would.
Longest resolved dependency chain below this package.
Part of this dependency tree has not been crawled yet, so these figures are a lower bound rather than a final total.
Compatibility
- .NET
- No constraint declared
Dependencies
Declared by System.Collections.Concurrent v4.3.0. Runtime dependencies are installed with the package; dev dependencies are not.
Runtime (10)
Used by
Popular packages that depend on System.Collections.Concurrent.
A set of standard .NET APIs that are prescribed to be used and supported together. 18a36291e48808fa7ef2d00a764ceb1ec95645a5 When using NuGet 3.x this package requires at least version 3.4.
Provides types for representing Abstract Syntax Notation One (ASN.1)-encoded data. Commonly Used Types: System.Security.Cryptography.AsnEncodedData System.Security.Cryptography.Oid System.Security.Cryptography.OidCollection When using NuGet 3.x this package requires at least version 3.4.
Relationship graph
Dependencies (left) and dependents (right) of System.Collections.Concurrent.
Frequently installed together
Provides base abstract encoding classes for converting blocks of characters to and from blocks of bytes. Commonly Used Types: System.Text.Encoding System.Text.DecoderFallbackException System.Text.Decoder System.Text.EncoderFallbackException System.Text.Encoder System.Text.EncoderFallback System.Text.EncoderFallbackBuffer System.Text.DecoderFallback System.Text.DecoderFallbackBuffer System.Text.DecoderExceptionFallback When using NuGet 3.x this package requires at least version 3.4.
Provides the fundamental primitives, classes and base classes that define commonly-used value and reference data types, events and event handlers, interfaces, attributes, and exceptions. This packages represents the core package, and provides the minimal set of types required to build a managed application. Commonly Used Types: System.Object System.Exception System.Int16 System.Int32 System.Int64 System.Enum System.String System.Char System.Boolean System.SByte System.Byte System.DateTime System.DateTimeOffset System.Single System.Double System.UInt16 System.UInt32 System.UInt64 System.IDisposable System.Uri When using NuGet 3.x this package requires at least version 3.4.
Provides classes and interfaces that supports queries that use Language-Integrated Query (LINQ). Commonly Used Types: System.Linq.Enumerable System.Linq.IGrouping<TKey, TElement> System.Linq.IOrderedEnumerable<TElement> System.Linq.ILookup<TKey, TElement> System.Linq.Lookup<TKey, TElement> When using NuGet 3.x this package requires at least version 3.4.
Provides commonly-used classes for performing mathematical functions, conversions, string comparisons and querying environment information. Commonly Used Types: System.Math System.Environment System.Random System.Progress<T> System.Convert System.Diagnostics.Stopwatch System.Runtime.Versioning.FrameworkName System.StringComparer System.IO.Path When using NuGet 3.x this package requires at least version 3.4.
Provides base classes, including System.Runtime.InteropServices.CriticalHandle and System.Runtime.InteropServices.SafeHandle, for types that represent operating system handles. Commonly Used Types: System.Runtime.InteropServices.SafeHandle Microsoft.Win32.SafeHandles.SafeWaitHandle System.Runtime.InteropServices.CriticalHandle System.Threading.WaitHandleExtensions System.IO.HandleInheritability When using NuGet 3.x this package requires at least version 3.4.
Provides types that support COM interop and platform invoke services. Commonly Used Types: System.Runtime.InteropServices.GCHandle System.Runtime.InteropServices.GuidAttribute System.Runtime.InteropServices.COMException System.DllNotFoundException System.Runtime.InteropServices.DllImportAttribute When using NuGet 3.x this package requires at least version 3.4.
Provides common types for the cryptographic libraries. Commonly Used Types: System.Security.Cryptography.ICryptoTransform System.Security.Cryptography.AsymmetricAlgorithm System.Security.Cryptography.SymmetricAlgorithm System.Security.Cryptography.HashAlgorithm System.Security.Cryptography.KeyedHashAlgorithm System.Security.Cryptography.HMAC System.Security.Cryptography.KeySizes System.Security.Cryptography.CryptographicException System.Security.Cryptography.CipherMode System.Security.Cryptography.PaddingMode System.Security.Cryptography.CryptoStream System.Security.Cryptography.CryptoStreamMode When using NuGet 3.x this package requires at least version 3.4.
Provides classes that define generic collections, which allow developers to create strongly typed collections that provide better type safety and performance than non-generic strongly typed collections. Commonly Used Types: System.Collections.Generic.List<T> System.Collections.Generic.Dictionary<TKey, TValue> System.Collections.Generic.Queue<T> System.Collections.Generic.Stack<T> System.Collections.Generic.HashSet<T> System.Collections.Generic.LinkedList<T> System.Collections.Generic.EqualityComparer<T> System.Collections.Generic.Comparer<T> System.Collections.Generic.SortedDictionary<TKey, TValue> When using NuGet 3.x this package requires at least version 3.4.
Provides classes and attributes that allow developers to create, store, and manage various culture-specific resources used in an application. Commonly Used Types: System.Resources.ResourceManager System.Resources.NeutralResourcesLanguageAttribute System.Resources.SatelliteContractVersionAttribute System.Resources.MissingManifestResourceException When using NuGet 3.x this package requires at least version 3.4.
Provides classes that support the compression and decompression of streams. Commonly Used Types: System.IO.Compression.DeflateStream System.IO.Compression.GZipStream System.IO.Compression.CompressionMode System.IO.Compression.CompressionLevel System.IO.Compression.ZipArchiveEntry System.IO.Compression.ZipArchive System.IO.Compression.ZipArchiveMode When using NuGet 3.x this package requires at least version 3.4.
Provides base types for cryptographic algorithms, including hashing, encryption, and signing operations. Commonly Used Types: System.Security.Cryptography.Aes System.Security.Cryptography.RSA System.Security.Cryptography.RSAParameters System.Security.Cryptography.HMACSHA1 System.Security.Cryptography.SHA256 System.Security.Cryptography.SHA1 System.Security.Cryptography.SHA512 System.Security.Cryptography.SHA384 System.Security.Cryptography.HMACSHA256 System.Security.Cryptography.MD5 System.Security.Cryptography.HMACSHA384 System.Security.Cryptography.HMACSHA512 When using NuGet 3.x this package requires at least version 3.4.
Provides classes for performing date calculations using specific calendars, including the Gregorian, Julian, Hijri and Korean calendars. Commonly Used Types: System.Globalization.HijriCalendar System.Globalization.GregorianCalendar System.Globalization.HebrewCalendar System.Globalization.KoreanCalendar System.Globalization.ThaiBuddhistCalendar System.Globalization.TaiwanCalendar System.Globalization.JapaneseCalendar System.Globalization.GregorianCalendarTypes System.Globalization.PersianCalendar System.Globalization.UmAlQuraCalendar When using NuGet 3.x this package requires at least version 3.4.
Release history
No releases in the last two years, typically about 35 days apart.
| Version | Published | License |
|---|---|---|
| 4.3.0latest | 9 years ago | — |
| 4.3.0-preview1-24530-04 | 9 years ago | — |
| 4.0.12 | 10 years ago | — |
| 4.0.12-rc2-24027 | 10 years ago | — |
| 4.0.11-beta-23516 | 10 years ago | — |
| 4.0.11-beta-23409 | 10 years ago | — |
| 4.0.11-beta-23225 | 11 years ago | — |
| 4.0.0 | 11 years ago | — |
| 4.0.10 | 11 years ago | — |
| 4.0.10-beta-23109 | 11 years ago | — |
| 4.0.0-beta-23109 | 11 years ago | — |
| 4.0.10-beta-23019 | 11 years ago | — |
| 4.0.0-beta-23019 | 11 years ago | — |
| 4.0.10-beta-22816 | 11 years ago | — |
| 4.0.10-beta-22605 | 11 years ago | — |
Overview
System.Collections.Concurrent is an NuGet package that provides several thread-safe collection classes that should be used in place of the corresponding types in the System.Collections.NonGeneric and System.Collections packages whenever multiple threads are accessing the collection concurrently. Commonly Used Types: System.Collections.Concurrent.ConcurrentDictionary<TKey, TValue> System.Collections.Concurrent.ConcurrentQueue<T> System.Collections.Concurrent.ConcurrentBag<T> System.Collections.Concurrent.BlockingCollection<T> System.Collections.Concurrent.ConcurrentStack<T> When using NuGet 3.x this package requires at least version 3.4. It has 4 known dependents in the graph. The latest version is 4.3.0.
Who should use it
Teams working in the NuGet ecosystem who need provides several thread-safe collection classes that should be used in place of the corresponding types in the System.Collections.NonGeneric and System.Collections packages whenever multiple threads are accessing the collection concurrently. Commonly Used Types: System.Collections.Concurrent.ConcurrentDictionary<TKey, TValue> System.Collections.Concurrent.ConcurrentQueue<T> System.Collections.Concurrent.ConcurrentBag<T> System.Collections.Concurrent.BlockingCollection<T> System.Collections.Concurrent.ConcurrentStack<T> When using NuGet 3.x this package requires at least version 3.4 and value a focused solution.
When not to use it
Consider an alternative if you need to or if a more actively-maintained option better fits your NuGet stack.
Pros
- Actively published to the registry.
Cons
- No license detected — review usage terms before adopting.
Auto-generated from collected registry metadata. No external claims are inferred.
Maintainers
Frequently asked questions
Should I use System.Collections.Concurrent?
No — System.Collections.Concurrent should not be adopted for new projects. Last published 3537 days ago. No license declared — you have no explicit right to use this code.
How do I install System.Collections.Concurrent?
Run `dotnet add package System.Collections.Concurrent` to add System.Collections.Concurrent to your NuGet project.
How many dependencies does System.Collections.Concurrent have?
System.Collections.Concurrent declares 10 direct dependencies and pulls in 14 packages in total once its runtime tree is resolved.
What license is System.Collections.Concurrent released under?
No license was detected in System.Collections.Concurrent's metadata; review the repository before use.
How popular is System.Collections.Concurrent?
NuGet does not publish download counts. Within PackageGraph's crawl, 4 known packages depend on System.Collections.Concurrent.
Is System.Collections.Concurrent still maintained?
The most recent release of System.Collections.Concurrent (v4.3.0) was published 9 years ago.