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On Sat, May 19, 2012 at 5:05 PM, Willie Matthews |
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<matthews.willie@×××××.com> wrote: |
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> |
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> |
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> On 05/19/12 04:13, Nilesh Govindrajan wrote: |
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>> On Sat, May 19, 2012 at 4:29 PM, Adam Carter <adamcarter3@×××××.com> wrote: |
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>>>> Which is the best caching dns server? I'm presently using pdns-recursor, |
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>>>> which is quite good, but doesn't have option to set minimum ttl (doesn't |
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>>>> make sense, but some sites like twitter have ridiculously low ttl of 30s). |
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>>> The load balancing technology will be slow to respond if the TTLs are |
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>>> high, so given that responsive load balancing and timely fail over are |
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>>> good things, it does make sense. IIRC the F5 default is 20 seconds. Be |
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>>> careful if you are going to break DNS, there may be consequences |
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>>> you're not aware of. |
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>>> |
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>> I know that. Just experimenting things, because if I can cache it |
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>> locally, it would be quicker for me. |
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>> |
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>>>> Also, it isn't able to save cached entries to file so that it can be |
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>>>> restored on next boot. Any option? |
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>>>> |
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>>>> I am keeping my box 24x7 on because it serves as dns on my small home wifi, |
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>>>> not acceptable to me, because network is almost off at night (only phone) |
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>>>> and I have my router as secondary dns. |
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>>> Can you re-phrase that? - its hard to understand what the problem is. |
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>>> |
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>> Persistence across multiple boots/reboots. |
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>> |
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>> I found pdnsd which can do that, trying that out now. |
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>> |
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> You should really try changing you DNS server to some faster ones. I was |
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> having this same problem with my ISP or DSL modem with built in router |
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> taking a long time. I changed my DNS servers to Google DNS Servers |
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> (8.8.4.4 and 8.8.8.8) and haven't had a problem. |
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> |
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> My setup is a little different but all in all I would really suggest you |
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> try a DNS server outside of your ISP. |
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> |
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> -- |
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> |
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> Willie Matthews |
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> matthews.willie@×××××.com |
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> |
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> |
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|
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I don't use ISP DNS as such, and I don't have their addresses either. |
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I've been using opendns for ages and added Google as fallback after it |
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was out for public. |
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The only advantage of using opendns is phishing protection and other |
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features like botnet/malware protection, about they not returning |
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NXDOMAIN on invalid domains is taken care of by pdnsd's reject option |
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:D |
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|
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The problem with opendns is the query time is large from my ISP, so |
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things seem slow. |
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I'm now using pdnsd, it has support for round robin load balancing |
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which is the algorithm used for load balancing usually, so websites |
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shouldn't have a problem. |
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Also, pdnsd has an option for minimum ttl of records as I wanted and |
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cache persistence over reboots. It's the thing that fits my needs |
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perfectly. |
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|
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-- |
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Nilesh Govindarajan |
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http://nileshgr.com |
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