CacheLens

See what's actually inside your ASP.NET Core IMemoryCache at runtime — keys, values, size, expiration, and hit/miss counts — without leaving VS Code.

Setup

1. Add the NuGet package to the app you want to inspect:

   dotnet add package CacheLens.AspNetCore
   

2. Wire it up in Program.cs:

   if (builder.Environment.IsDevelopment())
   {
       builder.Services.AddCacheLens();
   }
   // ...
   if (app.Environment.IsDevelopment())
   {
       app.MapCacheLens();
   }
   

3. Run the app. It shows up in the CacheLens view in the Activity Bar automatically — no host, port, or token to type in by hand.

What you get

• A live tree of every key currently in the app's IMemoryCache, with size, TTL, and hit count.
• Click a key to inspect its value as formatted JSON, see full metadata, evict it, or copy the value.
• Evict one key or clear everything, right from the tree.
• Values for keys that look secret-shaped (password, token, secret, …) are never sent to the editor — you'll see the key exists, never its contents.

See the project README for the full architecture and roadmap (distributed/hybrid cache support, live push updates, and more are on the way).