From caf36cb638aea639a92151abb45cc762f22afb74 Mon Sep 17 00:00:00 2001
From: orignal <i2porignal@yandex.ru>
Date: Mon, 6 Apr 2026 15:28:58 -0400
Subject: [PATCH] persist.netdbinterval param

---
 libi2pd/Config.cpp | 1 +
 libi2pd/NetDb.cpp  | 9 ++++++++-
 libi2pd/NetDb.hpp  | 3 +++
 3 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/libi2pd/Config.cpp b/libi2pd/Config.cpp
index 3b15fc88..beeff501 100644
--- a/libi2pd/Config.cpp
+++ b/libi2pd/Config.cpp
@@ -359,6 +359,7 @@ namespace config {
 		persist.add_options()
 			("persist.profiles", value<bool>()->default_value(true),       "Persist peer profiles (default: true)")
 			("persist.addressbook", value<bool>()->default_value(true),    "Persist full addresses (default: true)")
+			("persist.netdbinterval", value<int>()->default_value(60),     "NetDb persist interval in seconds (default: 60)")
 		;
 
 		options_description cpuext("CPU encryption extensions options. Deprecated");
diff --git a/libi2pd/NetDb.cpp b/libi2pd/NetDb.cpp
index 89d24b79..c6c68237 100644
--- a/libi2pd/NetDb.cpp
+++ b/libi2pd/NetDb.cpp
@@ -39,6 +39,7 @@ namespace data
 
 	NetDb::NetDb (): m_IsRunning (false), m_Thread (nullptr), m_Reseeder (nullptr),
 		m_Storage("netDb", "r", "routerInfo-", "dat"), m_PersistProfiles (true),
+		m_NetDbPersistInterval (NETDB_MIN_PERSIST_INTERVAL*1000LL),
 		m_LastExploratorySelectionUpdateTime (0), m_Rng(i2p::util::GetMonotonicMicroseconds () % 1000000LL)
 	{
 	}
@@ -85,6 +86,12 @@ namespace data
 
 		i2p::config::GetOption("persist.profiles", m_PersistProfiles);
 
+		int persistInterval = 0;
+		i2p::config::GetOption("persist.netdbinterval", persistInterval);
+		if (persistInterval < NETDB_MIN_PERSIST_INTERVAL) persistInterval = NETDB_MIN_PERSIST_INTERVAL;
+		if (persistInterval > NETDB_MAX_PERSIST_INTERVAL) persistInterval = NETDB_MAX_PERSIST_INTERVAL;
+		m_NetDbPersistInterval = persistInterval*1000LL;
+
 		m_IsRunning = true;
 		m_Thread = new std::thread (std::bind (&NetDb::Run, this));
 	}
@@ -154,7 +161,7 @@ namespace data
 					continue; // don't manage netdb when offline or transports are not running
 
 				uint64_t mts = i2p::util::GetMonotonicMilliseconds ();
-				if (mts >= lastManage + 60000) // manage routers and leasesets every minute
+				if (mts >= lastManage + m_NetDbPersistInterval) // manage routers and leasesets every persist.netdbinterval
 				{
 					if (lastManage)
 					{
diff --git a/libi2pd/NetDb.hpp b/libi2pd/NetDb.hpp
index 4464a9e9..c60bcc24 100644
--- a/libi2pd/NetDb.hpp
+++ b/libi2pd/NetDb.hpp
@@ -60,6 +60,8 @@ namespace data
 	const int NETDB_EXPLORATORY_SELECTION_UPDATE_INTERVAL = 82; // in seconds. for floodfill
 	const int NETDB_NEXT_DAY_ROUTER_INFO_THRESHOLD = 45; // in minutes
 	const int NETDB_NEXT_DAY_LEASESET_THRESHOLD = 10; // in minutes
+	const int NETDB_MIN_PERSIST_INTERVAL = 15; // 15 secs in seconds
+	const int NETDB_MAX_PERSIST_INTERVAL = 1800; // 30 minutes in seconds
 
 	/** function for visiting a leaseset stored in a floodfill */
 	typedef std::function<void(const IdentHash, std::shared_ptr<LeaseSet>)> LeaseSetVisitor;
@@ -195,6 +197,7 @@ namespace data
 
 			bool m_PersistProfiles;
 			std::future<void> m_SavingProfiles, m_DeletingProfiles, m_ApplyingProfileUpdates, m_PersistingRouters;
+			uint64_t m_NetDbPersistInterval; // in milliseconds
 
 			std::vector<std::shared_ptr<const RouterInfo> > m_ExploratorySelection;
 			uint64_t m_LastExploratorySelectionUpdateTime; // in monotonic seconds