MemCache  

usage

• cache

use mem_cache::{Cache};

let mut i32_cache = Cache::<i32>::new();
// expires_in_secs: 0 -> Immediately expired
let v1 = i32_cache.fetch("v1", 0, || 1);
assert_eq!(v1, &1);

let mut string_cache = Cache::<String>::new();
let v1 = string_cache.fetch("v1", 10, || "1".to_string());
assert_eq!(v1, "1");

• async cache

use mem_cache::{AsyncCache};

let mut i32_cache = AsyncCache::<i32>::new();
// expires_in_secs: 0 -> Immediately expired
let v1 = i32_cache.fetch("v1", 0, || Box::pin(async {
  Ok(1)
})).await?;
assert_eq!(v1, &1);

let mut string_cache = AsyncCache::<String>::new();
let v1 = string_cache.fetch("v1", 10, || Box::pin(async {
  Ok("1".to_string())
})).await?;
assert_eq!(v1, "1");

methods

• [async] fetch(key, expires_in_secs, closure) return cache value if not expires or recalculate closure value
• [async] force_fetch(key, expires_in_secs, closure) force recalculate closure value
• [async] get(key) return key cache value if cache exists
• keys() return all cached keys including the expired cache
• insert(key, value) overwrite cache value and expiration time if cache exists
• expire(key) make cache value expired if cache exists
• contains_key(key) returns true if the cache contains an entry for the given key
• remove(key) remove cache if cache exists
• clear_expired() cleanups the cache by removing expired entries.
• clear() empty all data include valid cache.