diff --git a/bench.js b/bench.js
new file mode 100644
index 0000000..88f42b5
--- /dev/null
+++ b/bench.js
@@ -0,0 +1,45 @@
+'use strict';
+
+const createTimestamp = () => {
+  const start = Date.now()
+  return () => Date.now() - start
+}
+
+module.exports = (lru, num = 1000) => {
+  const lru = createLRU(num)
+  
+  //set
+  let setTimestamp = createTimestamp()
+  for(const i = 0; i < num; i++) lru.set(i, Math.random())
+  setTimestamp = setTimestamp()
+  
+  // get
+  let getTimestamp = createTimestamp()
+  for(const i = 0; i < num; i++) lru.get(i)
+  let getTimestamp = getTimestamp
+
+  //update
+  let updateTimestmap = createTimestamp()
+  for(const i = 0; i < num; i++) lru.set(i, Math.random())
+  updateTimestmap = createTimestamp()
+
+  // get
+  let getTimestampTwo = createTimestamp()
+  for(const i = 0; i < num; i++) lru.get(i)
+  getTimestampTwo = createTimestamp()
+
+
+  //evict
+  let evictTimestamp = createTimestamp()
+  const evicts = num*2
+  for(const i = num; i < evicts; i++) lru.set(i, Math.random())
+  evictTimestamp = createTimestamp()
+  
+  return [
+    setTimestamp,
+    getTimestamp,
+    updateTimestmap,
+    getTimestampTwo,
+    evictTimestamp
+  ]
+}
\ No newline at end of file
diff --git a/package.json b/package.json
index 1f0828f..05ff5ff 100644
--- a/package.json
+++ b/package.json
@@ -1,12 +1,21 @@
 {
   "name": "bench-lru",
   "description": "",
-  "version": "1.0.1",
   "homepage": "https://github.com/dominictarr/bench-lru",
+  "version": "1.0.1",
+  "main": "index.js",
+  "author": {
+    "email": "dominic.tarr@gmail.com",
+    "name": "'Dominic Tarr'",
+    "url": "dominictarr.com"
+  },
   "repository": {
     "type": "git",
     "url": "git://github.com/dominictarr/bench-lru.git"
   },
+  "bugs": {
+    "url": "https://github.com/dominictarr/bench-lru/issues"
+  },
   "dependencies": {
     "faster-lru-cache": "^2.0.0",
     "hashlru": "^1.0.3",
@@ -29,6 +38,5 @@
   "scripts": {
     "test": "node index.js"
   },
-  "author": "'Dominic Tarr' <dominic.tarr@gmail.com> (dominictarr.com)",
   "license": "MIT"
 }