is memorycache thread safe

Full Answer

Is memory cache threadsafe?

System.Runtime.Caching.MemoryCache is threadsafe. Multiple concurrent threads can read and write a MemoryCache instance. Internally thread-safety is automatically handled to ensure the cache is updated in a consistent manner. What this might be referring to is that data stored within the cache may itself not be threadsafe.

Is objectcache thread safe?

While ObjectCache is thread safe, the implementations of it may not be. Thus the MemoryCache question. The default MS-provided MemoryCache is entirely thread safe. Any custom implementation that derives from MemoryCache may not be thread safe. If you're using plain MemoryCache out of the box, it is thread safe.

What is the difference between Cache and memorycache?

The MemoryCache class has many properties and methods for accessing the cache that will be familiar to you if you have used the ASP.NET Cache class. The main differences between the Cache and MemoryCache classes are that the MemoryCache class has been changed to make it usable by .NET Framework applications that are not ASP.NET applications.

Can multiple threads read and write from memorycache at the same time?

Multiple threads can read and write from the MemoryCache at the same time and they will not get obscure exceptions because of broken internal state, hence the GetOrCreate method rather than just Get and Create.

Is MemoryCache set thread-safe?

MemoryCache is threadsafe. Multiple concurrent threads can read and write a MemoryCache instance.

Is MemoryCache a singleton?

Note that the MemoryCache is a singleton, but within the process. It is not (yet) a DistributedCache. Also note that Caching is Complex(tm) and that thousands of pages have been written about caching by smart people.

Is rails cache thread-safe?

Keep it in memory thread_mattr_accessor method which makes it easy to build a trivial thread-safe cache service. Rails' implementation ensures every thread has its own storage location for cached_value ; therefore this should be thread-safe (assuming #compute_value can safely run both concurrently and in parallel).

Is IDistributedCache thread-safe?

IMO all implementations of IDistributedCache should be thread-safe.

What is MemoryCache?

Cache memory is a chip-based computer component that makes retrieving data from the computer's memory more efficient. It acts as a temporary storage area that the computer's processor can retrieve data from easily.

Where is Memorycache stored?

"text": "When system stores the data in a RAM, it is called in-memory caching. It is the simplest cache as compared to the other cache forms. It sits between applications and databases to deliver responses at high speeds by storing data from earlier requests or copied directly from databases."

Is Ruby on Rails multithreaded?

Dissecting Ruby on Rails 5 - Become a Professional Developer Often on a single CPU machine, multiple threads are not actually executed in parallel, but parallelism is simulated by interleaving the execution of the threads. Ruby makes it easy to write multi-threaded programs with the Thread class.

Why is Rails single threaded?

It's not a common production platform among the RoR community. As a result, Eventhough Rails itself is thread-safe since version 2.2, there isn't yet a good multi-threaded server for it on Windows servers. And you get the best results by running it on *nix servers using multi-process/single-threaded concurrency model.

Is Puma multithreaded?

Puma is a multi-threaded web server and our replacement for Unicorn. Unlike other Ruby Webservers, Puma was built for speed and parallelism. Puma is a small library that provides a very fast and concurrent HTTP 1.1 server for Ruby web applications. It is designed for running Rack apps only.

What is Memorycache C#?

In-Memory Cache is used for when you want to implement cache in a single process. When the process dies, the cache dies with it. If you're running the same process on several servers, you will have a separate cache for each server. Persistent in-process Cache is when you back up your cache outside of process memory.

What is IDistributedCache?

The IDistributedCache interface provides the following methods to manipulate items in the distributed cache implementation: Get, GetAsync: Accepts a string key and retrieves a cached item as a byte[] array if found in the cache. Set, SetAsync: Adds an item (as byte[] array) to the cache using a string key.

What is MemoryCacheEntryOptions?

SetAbsoluteExpiration(MemoryCacheEntryOptions, TimeSpan) Sets an absolute expiration time, relative to now. SetPriority(MemoryCacheEntryOptions, CacheItemPriority) Sets the priority for keeping the cache entry in the cache during a memory pressure tokened cleanup.

What is Memorycache C#?

In-Memory Cache is used for when you want to implement cache in a single process. When the process dies, the cache dies with it. If you're running the same process on several servers, you will have a separate cache for each server. Persistent in-process Cache is when you back up your cache outside of process memory.

What is lazy cache?

Lazy cache is a simple in-memory caching service. It has a developer friendly generics based API, and provides a thread safe cache implementation that guarantees to only execute your cachable delegates once (it's lazy!).

Is MemoryCache.Setunfortunately thread safe?

The MSDN documentation for MemoryCache.Setunfortunately doesn’t state explicitly whether it is thread-safe or not.

Is memory cache thread safe?

Yes, the MemoryCache class is thread safe: System.Runtime.Caching.MemoryCache is threadsafe. Multiple concurrent threads can read and write a MemoryCache instance. Internally thread-safety is automatically handled to ensure the cache is updated in a consistent manner.

Is the Get and Set method thread safe?

This being said the Get and Set methods are thread safe but if the data structure you might be storing into this cache is not thread safe you might get into trouble. Imagine for example that you stored a dictionary inside this cache. Then while thread1 uses Getto fetch the dictionary and starts reading from it, thread2 uses Getto fetch this same dictionary and tries to write to it. While the Get operation will be thread safe what will happen next could be pretty nasty.

Is thread1 or thread2 thread safe?

Then while thread1 uses Get to fetch the dictionary and starts reading from it, thread2 uses Get to fetch this same dictionary and tries to write to it. While the Get operation will be thread safe what will happen next could be pretty nasty. This type is thread safe.

How to add memory cache to ASP.NET Core?

Adding MemoryCache to an ASP.NET Core app is easy, just add the Microsoft.Extensions.Caching.Memory nuget. It's recommended over System.Runtime.Caching, and works natively with ASP.NET Core dependency injection, according to the documentation.

What is thread safety?

Thread safety is a computer programming concept applicable to multi-threaded code. Thread-safe code only manipulates shared data structures in a manner that ensures that all threads behave properly and fulfill their design specifications without unintended interaction.

What is lazy cache?

Alastair: LazyCache is a tiny library that wraps and extends the Microsoft in-memory caching library. It's not particularly long or complicated to do caching just using the Microsoft library, but after writing the cache aside pattern with locking into a few apps I decided to abstract it out into LazyCache.

Is memory cache different in ASP.NET Core than in the.NET Framework?

The behaviour of the MemoryCache is different in ASP.NET Core than in the .NET Framework.

Is AddOrGetExisting thread safe?

The AddOrGetExisting method from the .NET Framework is thread-safe ( according to the documentation ).

Who created lazy cache?

To get a better understanding of the questions raised in this blog post, I forwarded them to a man that knows the inner workings of MemoryCache, the creator of LazyCache, Alastair Crabtree.

Is Thread Safe a race condition?

Thread safe: Implementation is guaranteed to be free of race conditions when accessed by multiple threads simultaneously.

Introduction

Unexpected Behaviour

What Is Happening Here?

Is The Getorcreate Method thread-safe?

Is This A Bug?

A Solution

Interview with Alastair Crabtree

Conclusion

Credits