DNS Cache Information

The DNS cache caches IP addresses and DNS names. Your server’s DNS cache is disabled by default. Statistics are displayed in the DNS Statistics for Process ID page under Monitor in the Server Manager.

enabled

If the DNS cache is disabled, the rest of this section is not displayed.

Tuning

By default, the DNS cache is off. You can enable DNS caching by:

• Adding the following line to magnus.conf:

  Init fn=dns-cache-init

• Setting the DNS value to "on" in the Magnus Editor of the Server Manager

• Selecting DNS Enabled from the Performance Tuning page under Preferences in the Server Manger

CacheEntries (CurrentCacheEntries / MaxCacheEntries)

The number of current cache entries and the maximum number of cache entries. A single cache entry represents a single IP address or DNS name lookup. The cache should be as large as the maximum number of clients that will access your web site concurrently. Note that setting the cache size too high will waste memory and degrade performance.

Tuning

You can set the maximum size of the DNS cache by:

• Adding the following line to the magnus.conf file:

  Init fn=dns-cache-init cache-size=1024

  The default cache size is 1024

• Entering or changing the value in the Size of DNS cache field of the Performance Tuning page in the Server Manager

HitRatio (CacheHits / CacheLookups)

The hit ratio displays the number of cache hits versus the number of cache lookups.

This setting is not tunable.