feat(taxonomy): add rust sidecar compact surface pipeline

rust/vendor/crabrl/src/cache.rs

@@ -0,0 +1,47 @@
+use dashmap::DashMap;
+use std::sync::Arc;
+use std::hash::Hash;
+
+pub struct LockFreeCache<K, V> {
+    map: Arc<DashMap<K, V>>,
+    capacity: usize,
+}
+
+impl<K, V> LockFreeCache<K, V>
+where
+    K: Eq + Hash + Clone,
+    V: Clone,
+{
+    pub fn new(capacity: usize) -> Self {
+        Self {
+            map: Arc::new(DashMap::with_capacity(capacity)),
+            capacity,
+        }
+    }
+
+    #[inline(always)]
+    pub fn get(&self, key: &K) -> Option<V> {
+        self.map.get(key).map(|v| v.clone())
+    }
+
+    #[inline(always)]
+    pub fn insert(&self, key: K, value: V) {
+        if self.map.len() >= self.capacity {
+            if let Some(entry) = self.map.iter().next() {
+                let k = entry.key().clone();
+                drop(entry);
+                self.map.remove(&k);
+            }
+        }
+        self.map.insert(key, value);
+    }
+
+    #[inline(always)]
+    pub fn contains(&self, key: &K) -> bool {
+        self.map.contains_key(key)
+    }
+
+    pub fn clear(&self) {
+        self.map.clear();
+    }
+}