21,461 reputation
12449
bio website ripple.com
location Oakland, CA
age 44
visits member for 3 years, 2 months
seen 8 hours ago

I am Chief Cryptographer at Ripple Labs and one of the architects of the Ripple payment system.


Nov
9
answered Different 'development' environments for different developers
Nov
9
comment Different 'development' environments for different developers
Where are these configuration variables stored exactly?
Nov
9
comment How are UDP datagrams that don't have me as a recipient reaching my server?
+1 for the idea that you should check the Ethernet hardware source address to at least know how they're getting on your network.
Nov
9
answered How are UDP datagrams that don't have me as a recipient reaching my server?
Nov
9
comment Resource used on Amazon EC2 hosting multiple domains
Apache isn't hogging the memory. The operating system is, because it's designed to. Nothing else wants the memory, and it takes effort to make memory free. Memory that's free does nothing. Memory that's in use eliminates disk accesses.
Nov
9
revised Resource used on Amazon EC2 hosting multiple domains
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Nov
9
comment Resource used on Amazon EC2 hosting multiple domains
Right, so as I explained, software is designed to use all available memory. The assumption is that you can't save it for later, so not using it is simply wasting it and making it free (if it will go unused) has no benefit.
Nov
9
answered Offsite network/data center for disaster recovery
Nov
9
comment Offsite network/data center for disaster recovery
There is absolutely no way we can know what you will be able to do.
Nov
9
answered Resource used on Amazon EC2 hosting multiple domains
Nov
9
answered Is a Router required to set up a network?
Nov
9
comment Wildcard certificate with separate certificates for each host
Yes. This is the downside with wildcard certificates -- you only have one identity.
Nov
9
answered Calculating bandwidth math
Nov
9
comment i can upload at about 10Mbps, but when i open port 80 and running a web server, i can serve data only at about 200 to 300kbps - why?
Or your router has trouble proxying the same port its web interface is on.
Nov
9
answered Specifying multiple acl conditions on one acl line of squid.conf
Nov
9
answered Bonding/Teaming 2 NIC cards : pro and cons
Nov
9
comment ptp time synchronization on centos6/rhel
PTP is different from NTP. But unless the OP has a specific requirement, he should use NTP instead. It's not quite as accurate as far as getting machines on a LAN to agree, but it's much more accurate to real wall clock time.
Nov
8
answered Accessing a machine with a non-static IP from outside the network
Nov
8
comment Web server response degrades even though it doesn't seem busy
Disk I/O, network I/O, and memory would be the next things to look at after CPU.
Nov
8
revised Why bittorent needs many ports
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