threadsafecache deprecated

Highlights from the README

• Generics. Values are stored without boxing through interface{}.
• LRU bound. When the cache fills, the least-recently-used entry is evicted. (hashicorp/golang-lru/v2 does the heavy lifting.)
• TTL. Entries older than the TTL miss on Get and are evicted as a side effect of being touched. Set TTL to 0 to disable expiry and use the cache as pure LRU.
• Lock everything. All operations take the same sync.Mutex — hashicorp’s LRU mutates internal state on Get (recency tracking), so splitting reads and writes is unsafe in general. The result is simple and race-clean.

Code from the README

import "github.com/ubgo/threadsafecache"

c, _ := threadsafecache.New[string](
    1024,                     // LRU size
    5 * time.Minute,          // TTL (0 = disabled)
)

c.Set("user:42", payload)

if v, ok := c.Get("user:42"); ok {
    use(v)
}

threadsafecache.New[int](
    1024, ttl,
    threadsafecache.WithClock[int](myFakeClock),  // tests only
)

From the threadsafecache README.