1 files changed, 27 insertions, 0 deletions
diff --git a/src/shared_cache.rs b/src/shared_cache.rs
new file mode 100644
index 0000000..4d6aec2
--- /dev/null
+++ b/src/shared_cache.rs
@@ -0,0 +1,27 @@
+use std::{
+    collections::HashMap,
+    sync::{Arc, Mutex},
+    time::{SystemTime, UNIX_EPOCH},
+};
+
+#[derive(Debug, Clone)]
+pub struct CacheEntry {
+    pub value: String,
+    pub expires_at: Option<u64>, // Unix timestamp in milliseconds
+}
+
+impl CacheEntry {
+    pub fn is_expired(&self) -> bool {
+        if let Some(expiry) = self.expires_at {
+            let now = SystemTime::now()
+                .duration_since(UNIX_EPOCH)
+                .unwrap()
+                .as_millis() as u64;
+            now > expiry
+        } else {
+            false
+        }
+    }
+}
+
+pub type SharedCache = Arc<Mutex<HashMap<String, CacheEntry>>>;