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Solving the DNS Sync Headache

I've spent the last year chasing the "perfect" home DNS setup. I started with Pi-hole many years ago, moved to AdGuard Home for the sleek UI late 2025, and eventually settled into a dual-node setup for redundancy.

But I hit a wall: Syncing. Every time I blocked a new domain or changed a setting, I had to manually replicate it on the second instance or rely on third-party scripts like AdGuardHome-Sync. I wanted a solution that was built for high availability from the ground up.

The Solution: Technitium DNS

I discovered Technitium DNS right before the holidays. Unlike its competitors, Technitium offers native clustering capabilities. This means multiple instances can share the same configuration and sync almost instantly without any extra "glue" code or third-party tools. Creating a cluster and adding nodes is straightforward.

The Setup

The installation was surprisingly lightweight. I migrated my settings manually to ensure a clean slate. My favorite discovery during the move? The resource efficiency.

Metric AdGuard Home Technitium DNS
Idle RAM High (Spiky) Low & Stable
Syncing Manual/External Native Clustering
Log Searching Slow/Heavy Snappy

Gotchas

The biggest adjustment is the interface. AdGuard Home is undeniably "prettier," and Technitium feels more like a professional networking tool. If you are looking for a "one-click" experience, the learning curve here is slightly steeper, but the performance payoff is worth it.

Final Thoughts

After a few weeks, the stability is what sold me. Troubleshooting blocked queries is much faster because the interface doesn't lag under the weight of its own logs. If you’re running a single node, AdGuard Home is great! But if you want a robust, redundant cluster, Technitium is the clear winner.