diff --git a/storage/hybrid/PML.txt b/storage/hybrid/PML.txt
new file mode 100644
index 0000000..f8e5c76
--- /dev/null
+++ b/storage/hybrid/PML.txt
@@ -0,0 +1,26 @@
+This is PML format:
+
+[OP]
+0: create new session
+1: destroy session
+2: change session ID (sid)
+3: modify (create, update key/val) session DATA
+
+[SID] is session ID
+
+[DATA]
+0: -
+1: -
+2: new session ID
+3: (key)|(val) - create and update DATA (key) only for delete key
+
+
+PML log file:
+______________________________________________________   LOG stream...
+OP | SID | DATA                                       |   |
+------------------------------------------------------    |
+-- // -- // -- // --                                      |
+------------------------------------------------------    |
+   ...   ....   .....                                     |
+OP | SID | DATA                                           |
+______________________________________________________    V
\ No newline at end of file
diff --git a/storage/hybrid/hybrid.go b/storage/hybrid/hybrid.go
new file mode 100644
index 0000000..b52b458
--- /dev/null
+++ b/storage/hybrid/hybrid.go
@@ -0,0 +1,6 @@
+// Package hybrid is session storage that use RAM
+// and provider modification log (PML) for very fast efecient
+// session operations and filsystem saving using SPML
+// save session data into filesystem  lazy save. PML is similar to
+// WAL in databases
+package hybrid