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sajal83

1,569 karma · joined August 23, 2010

[ my public key: https://keybase.io/sajal; my proof: https://keybase.io/sajal/sigs/FRgz6WjRPcySo08oI3SNhMSFTWZlbqgxR9LZUck5MJM ]
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sajal83··on Show HN: AWS S3 outage test from across the world
click "Run test again". The OP link is test from 5 hours ago.
sajal83··on Show HN: AWS S3 outage test from across the world
Pls try again. The server had crashed due to "too many open files". I'm leaking file descriptors somewhere.
sajal83··on Ask HN: Who here would be interested in a free daily updated GeoIP database?
Id be interested, especially if it used same file format as Maxmind's binary dat file ... so it can be a drop in replacement.
sajal83··on iTunes Is Illegal Under UK Copyright Law
It is "copying". The same way accessing a webpage is "downloading" it.
sajal83··on See Android Go
Waiting for them to release the source for Ivy. I made PoC android app writing UI in Java... but curious to know how to do it purely in Go without knowing how to interact with OpenGL.
sajal83··on GCC 5.2 released
Nopes. Go 1.4.2 was released with GCC 5.1 (April 22, 2015). This release is just bugfixes.
sajal83··on Ask HN: How do I convince my coworkers to use HTTP well? Or am I being a pedant?
If your app does become super popular, it would be very hard to implement http-level caching when using only POST. By using GET you can do caching at client (or CDN/reverse proxy) layer.
sajal83··on Cloudflare DNS problem
Any example hostname thats configured on Dyn and is not resolving?
sajal83··on 5 out of 7 .io nameservers appear to be down
(monitoring tool author here) Agree. Makes sense. We should have run this test with RD bit unset.

But .. IIRC if RD is set when quering a non-recursive, it should respond normally with authoritative response Recursion Available (RA) flag unset. It does not mean it should drop the query totally.

sajal83··on 5 out of 7 .io nameservers appear to be down
Interesting, it works locally for me when using +norec (i.e. Recursion Desired = false)... but is there a valid reason for an authoritative to to respond anything if RD is set to true? FYI Pulse always sets RD=true
sajal83··on 5 out of 7 .io nameservers appear to be down
just did that. thanks
sajal83··on 5 out of 7 .io nameservers appear to be down
Thats angularjs template... We need to put in some placeholder there.
sajal83··on 5 out of 7 .io nameservers appear to be down
every y out of x times a DNS recursor will fail to resolve .io .... ratio of y:x is based on complex srtt algorithms, and traffic levels. Not a big issue for popular hostnames like docker.io because most recursives would have the delegation in their cache.
sajal83··on 5 out of 7 .io nameservers appear to be down
https://pulse.turbobytes.com/results/5595115aecbe40693500017... better link to show that its not a local resolver issue.
sajal83··on Blood donors in Sweden get a text message when their blood saves someone's life
Many places already do that... counting the number of times a person has donated (not actually used) and giving them some status accordingly.
sajal83··on Show HN: Instantly run DNS, HTTP and Traceroute tests across the globe
Agent and control server written in Go : https://github.com/turbobytes/pulse
sajal83··on The CHIP Is a $9 Computer That Can Almost Do It All
They are using much older A13 which retails for $3 on aliexpress...
sajal83··on Racking Mac Pros
Why not unassemble the cylinders and re-assemble into rectangle chasis? Im sure that would give you a more dense layout.. Sure it would void warranty and resale value.. but do you really care?
sajal83··on How I doubled my Internet speed with OpenWRT
Another way for "bonding" would be to use mptcp ( http://multipath-tcp.org ). You might need to patch and build openwrt yourself for it... The key difference is with mptcp each individual tcp connection uses both connections at the same time, rather than picking a lottery.

I blogged about my setup at http://www.sajalkayan.com/post/fun-with-mptcp.html

sajal83··on GoVPN – simple secure free software virtual private network daemon
https://help.ubuntu.com/lts/serverguide/openvpn.html works all the time... but im on a shitty connection so openvpn itself is not a bottleneck.
sajal83··on Virtual DNS: DDoS Mitigation and Global Distribution for DNS Traffic
quick question. is one of cloudflare's nameserver is down or its some kind of security screening?

digitalocean.com is served by kim.ns.cloudflare.com. and walt.ns.cloudflare.com. (http://pastie.org/private/ky5ytls1prxkblndab0ja#16-17)

But query to walt.ns.cloudflare.com gets blackholed.

From Ziggo (NL) : http://pastie.org/10017148 From True (TH) : http://pastie.org/10017139#1,22

From both these places I can ping walt just fine... Chose Digital Ocean cause thats mentioned as star customer.

sajal83··on How LINE is turning Instagram into an ecommerce app in Thailand
"this almost suggests that people trust LINE more than the credit card processing infrastructure"

And to think that until recently LINE used to send things unencrypted over plaintext when using mobile internet.

sajal83··on Google stopped doing currency conversions
Was not working last night.
sajal83··on Google stopped doing currency conversions
It was one of my most used features... RIP old friend...
sajal83··on Israeli Startup Can Charge Your Phone in 1 Minute
No, it can't charge my phone in 1 Minute.
sajal83··on Cloudfront is adding extra DNS round trip
Interesting. Did not think about ISP caching resolvers having to deal with massive zones. But a TTL of just 1831 in the second delegation sounds too low.
sajal83··on Cloudfront is adding extra DNS round trip
Not sure if this is recent change... or has it always been like that.
sajal83··on [dead]
the css file URL : https://css-ssl.bbystatic.com/css/plannedOutage/OutagePage.c...
sajal83··on Global Routing with Anycasted DNS. Teardown: NSONE
Kris from NSONE really knows his stuff. We are on process of moving all our DNS traffic to them. When starting to look into them I was skeptical of US ever using such a new provider... But their hands-on approach changed our minds...
sajal83··on SpaceX Will Announce Micro-Satellites for Low Cost Internet Within Three Months
<10ms is assuming that the satellite you connect to is directly accessing a base station... if the signal needs to be routed across the world to get to the base station then its a lot higher than conventional fiber.
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