If the code was simple I wouldn't be too impressed either. But a lot of processing goes into determining each of the 30 links to show the user. There's read loc

If the code was simple I wouldn't be too impressed either. But a lot of processing goes into determining each of the 30 links to show the user. There's read locking and a sort on a ~1K-element slice in there too. The test was done on the server, nothing going across the net. In real use a page loads in as little as 150 ms, of which ~20 ms is the speed of light delay to/from the server.