docs: normalise caching package READMEs

Author: tgiachi

src/SquidStd.Caching.Abstractions/README.md

@@ -22,14 +22,6 @@ backend implementation (in-memory or Redis) from a companion package.
 dotnet add package SquidStd.Caching.Abstractions
 ```
 
-## Features
-
-- `ICacheService` — typed `GetAsync<T>` / `SetAsync<T>` / `RemoveAsync` / `ExistsAsync` / `GetOrSetAsync<T>` facade.
-- `ICacheProvider` — the raw byte-level backend contract implemented per provider.
-- `CacheService` — shared facade that serializes values, applies the key prefix and default TTL, and implements cache-aside.
-- `ICacheMetrics` (+ `CacheMetricsProvider`, `NoOpCacheMetrics`) — hit/miss/set/remove metrics.
-- `CacheOptions` and `CacheConnectionString` — configuration and connection parsing.
-
 ## Usage
 
 ```csharp
@@ -51,6 +43,10 @@ public Task<int> GetOrComputeAsync(ICacheService cache)
 | `CacheOptions`          | Default TTL and key prefix.                                         |
 | `CacheConnectionString` | `scheme://host[?params]` parsing into `CacheOptions`.               |
 
+## Related
+
+- Tutorial: [Caching](https://tgiachi.github.io/squid-std/tutorials/caching.html)
+
 ## License
 
 MIT — part of [SquidStd](https://github.com/tgiachi/squid-std).

src/SquidStd.Caching.Redis/README.md

@@ -21,14 +21,6 @@ Registered with a single `AddRedisCache(...)` call.
 dotnet add package SquidStd.Caching.Redis
 ```
 
-## Features
-
-- One-line registration: `container.AddRedisCache(connectionString)` or with `RedisCacheOptions`.
-- Redis-backed `ICacheProvider` reusing the shared `ICacheService` facade and serializer.
-- Native TTL via Redis key expiry (`SET ... EX`).
-- Connection via a `redis://` connection string or an explicit StackExchange.Redis configuration string.
-- Built-in hit/miss metrics via `CacheMetricsProvider`.
-
 ## Usage
 
 ```csharp
@@ -52,6 +44,10 @@ var user = await cache.GetAsync<object>("user:1");
 | `RedisCacheProvider`               | StackExchange.Redis-backed `ICacheProvider`.  |
 | `RedisCacheOptions`                | StackExchange.Redis connection configuration. |
 
+## Related
+
+- Tutorial: [Caching](https://tgiachi.github.io/squid-std/tutorials/caching.html)
+
 ## License
 
 MIT — part of [SquidStd](https://github.com/tgiachi/squid-std).

src/SquidStd.Caching/README.md

@@ -21,14 +21,6 @@ single `AddInMemoryCache()` call. Ideal for single-process apps, tests, and loca
 dotnet add package SquidStd.Caching
 ```
 
-## Features
-
-- One-line registration: `container.AddInMemoryCache()` (provider, facade, serializer, metrics).
-- `IMemoryCache`-backed storage with absolute per-entry TTL and built-in eviction.
-- Reuses the shared `CacheService` facade (key prefix, default TTL, cache-aside).
-- Built-in hit/miss metrics via `CacheMetricsProvider`.
-- Configure via `CacheOptions` or a `memory://` connection string (`?defaultTtlSeconds=`, `?keyPrefix=`).
-
 ## Usage
 
 ```csharp
@@ -51,6 +43,10 @@ var user = await cache.GetAsync<object>("user:1");
 | `CacheRegistrationExtensions` | `AddInMemoryCache(...)` registration.   |
 | `InMemoryCacheProvider`       | `IMemoryCache`-backed `ICacheProvider`. |
 
+## Related
+
+- Tutorial: [Caching](https://tgiachi.github.io/squid-std/tutorials/caching.html)
+
 ## License
 
 MIT — part of [SquidStd](https://github.com/tgiachi/squid-std).