diff --git a/retry/retry.go b/retry/retry.go
new file mode 100644
index 00000000..570283cd
--- /dev/null
+++ b/retry/retry.go
@@ -0,0 +1,22 @@
+// Package retry retries an operation with exponential backoff.
+package retry
+
+import "time"
+
+// Do runs fn up to attempts times. After each failure it waits, doubling the
+// delay each round (exponential backoff), and returns the final error if every
+// attempt fails.
+func Do(attempts int, base time.Duration, fn func() error) error {
+      delay := base
+      var err error
+      for i := 0; i < attempts; i++ {
+              if err = fn(); err == nil {
+                      return nil
+              }
+              if i < attempts-1 {
+                      time.Sleep(delay)
+                      delay *= 2
+              }
+      }
+      return err
+}