diff --git a/luprex/core/cpp/idalloc.cpp b/luprex/core/cpp/idalloc.cpp
index 1a91b33d..39fca25e 100644
--- a/luprex/core/cpp/idalloc.cpp
+++ b/luprex/core/cpp/idalloc.cpp
@@ -83,6 +83,27 @@ int64_t IdGlobalPool::alloc_id_for_thread(lua_State *L) {
     }
 }
 
+void IdGlobalPool::serialize(StreamBuffer *sb) {
+    sb->write_int64(salvaged_.size());
+    for (int64_t batch : salvaged_) {
+        sb->write_int64(batch);
+    }
+    sb->write_int64(next_batch_);
+    sb->write_int64(next_id_);
+    sb->write_int64(queue_fill_);
+}
+
+void IdGlobalPool::deserialize(StreamBuffer *sb) {
+    int64_t salvaged_size = sb->read_int64();
+    salvaged_.resize(salvaged_size);
+    for (int i=0; i < salvaged_size; i++) {
+        salvaged_[i] = sb->read_int64();
+    }
+    next_batch_ = sb->read_int64();
+    next_id_ = sb->read_int64();
+    queue_fill_ = sb->read_int64();
+}
+
 IdPlayerPool::IdPlayerPool(IdGlobalPool *gp) {
     global_ = gp;
 }
@@ -133,6 +154,21 @@ void IdPlayerPool::prepare_thread(lua_State *L) {
     lua_setnextid(L, get_batch());
 }
 
+void IdPlayerPool::serialize(StreamBuffer *sb) {
+    sb->write_int64(ranges_.size());
+    for (int64_t batch : ranges_) {
+        sb->write_int64(batch);
+    }
+}
+
+void IdPlayerPool::deserialize(StreamBuffer *sb) {
+    int64_t ranges_size = sb->read_int64();
+    ranges_.resize(ranges_size);
+    for (int i=0; i < ranges_size; i++) {
+        ranges_[i] = sb->read_int64();
+    }
+}
+
 LuaDefine(unittests_idalloc, "c") {
     IdGlobalPool gp;
     IdPlayerPool pp(&gp);
diff --git a/luprex/core/cpp/idalloc.hpp b/luprex/core/cpp/idalloc.hpp
index e12aee04..55225d27 100644
--- a/luprex/core/cpp/idalloc.hpp
+++ b/luprex/core/cpp/idalloc.hpp
@@ -69,6 +69,7 @@
 #include <vector>
 #include <deque>
 #include "luastack.hpp"
+#include "streambuffer.hpp"
 
 class IdGlobalPool {
 private:
@@ -118,6 +119,12 @@ public:
     // Allocate an ID for the specified thread.  Uses the thread's
     // batch if possible.  If not, fetches one ID from the global pool.
     int64_t alloc_id_for_thread(lua_State *L);
+
+    // Serialize to a streambuffer.
+    void serialize(StreamBuffer *sb);
+
+    // Deserialize from a streambuffer.
+    void deserialize(StreamBuffer *sb);
 };
 
 class IdPlayerPool {
@@ -155,6 +162,12 @@ public:
 
     // Return the size of the queue.
     int size() { return ranges_.size(); }
+
+    // Serialize to a streambuffer.
+    void serialize(StreamBuffer *sb);
+
+    // Deserialize from a streambuffer.
+    void deserialize(StreamBuffer *sb);
 };
 
 #endif // IDALLOC_HPP