Sorry Frank:) I really enjoyed reading (and reviewing) the book. I only wish more people didn't think software engineering was dead. I strongly disagree with the posts by "that crowd" in this message area.
DSL wasn't designed to be an open access standard any more than HFC or ISDN is. DSL wasn't designed from the ground up, it has roots in ISDN and is basically just a faster version.
Both technologies: HFC (cable) and DSL can be slow. Do you realize what's going on behind the scenes for each? Let me break it down for you:
When you get an ADSL or SDSL line through, let's say Northpoint (or Covad), they order a circuit for you from your local carrier (ie the Bells YMMV) that go from your house to the CO facilities. At the CO facilities there is a cross connect or a DS3 which channelizes all traffic for the city into the Northpoint facilities. Do you know what that means? It means they can oversubscribe that DS3 like a mutha fucker. I've heard of other companies overselling the DS3 3 to 5 times!!!
On the HFC side, you're in a much better situation. (IIRC) Net congestion happens in the various neighborhood where there are lots of users sending lots of traffic (ok, duh), so all the cable company has to do is add more lasernodes in the various places there is congestion and it will alleviate the load. Fiber is wonderful. There is also a chance to have bandwidth maximization at the cable headend where the DS3's come in, but that's easy, throw another DS3 on the fire and you're in business.
Secondly, the standardization of DSL equipment is awful. Everyone has a different DSLAM (circuit aggregator) and everyone has a different DSL bridge (Coppermoutain etc) and none of them integrate.
And lastly in favor of cable, it's much faster than ADSL and SDSL upstream and downstream (although some ISPs do rate limit customers).
What do you mean "having your eyeballs owned by a cable company"? Just because your cable mdoem provider has content doesn't mean you have to look at it. When I had my cable modem I didn't install anything of the extra content bells and whistles.
Well first of all this is good news. I work for Excite@Home so this is a boost to our morale and will hopefully improve our stock price.:)
My guess is that AOL will get acclimated with Time Warner and start to open up to keep with AT&T. By that time (2001, 2002) ATT will start letting in providers like Mindspring when Excite@Home's MSO partnerships are up in certain markets.
I think AT&T and Excite@Home are far ahead of AOL and the acquisition of Time Warner is just going to slow them down. I think it's ironic that they wanted open access so bad, then when we outmaneuvered them they got mad and bought a cable giant. Sure, there was a lot more to buying TW than open access, but it did play a large role. Watch out, AOL is the next "Microsoft" of the Internet.
It'll be interested to see what happens when NT (windows?) 2000 comes out. I predict Linux will eclipse NT within the next 12-18 months. (It may have already eclipsed because of ftp downloads).
Quote: A denial of service attack is increasingly becoming a common networking prank. By deluging a Web site's equipment with too many requests for information, an attacker can effectively clog the system, slowing performance or altogether crashing the site.
I wish there was more information on what really happened. So if Yahoo is serving millions and millions of hits a day, why can't their web site equipment handle a "deluge of requests for information"? Either it's a denial of service (which I interpret as someone sending malicious packets) or it's a deluge of requests. Which one is it? A DoS could be just that, a denial of service, but more often it's referred to as some kind of "ping bomb" or malicious packet right?
Heh, I noticed it's not on Yahoo's frontpage and I had to hunt to find it in the Yahoo news area on my.yahoo.com:)
God I get tired of saying this, just because something is derrived from BSD, doesn't make it "stolen" or from FreeBSD. I'm not sure if Be is derrived from Be or not, but it's not based off of FreeBSD.
Hey don't get me wrong, I'm not against Be, but I spend a lot of time researching and looking at emerging technologies and I just haven't seen Be pop up very much. I'm not saying Linux is the end all be all, but it is very ubiquitous. I'm very open to operating systems and I'd love to try out Be. At home I run IRIX, Windows, Linux, Mac OSX, Mac OS 9, so I'm not close minded by any means.
And there are Fortune 500 companies out there that use Linux as servers and desktop machines. It's very affordable, the software and device support is very lucrative.
So send me a copy of Be for Intel:) Until then I'll eagerly await Mac OSX DR3 (I'll probably get flamed for that)
I have no personal feelings about Be, but I'd just like to ask, where has Be been? I've driven by their offices many times and browsed their webpage but that's the only exposure I've had with them:) Be really sounds like a NeXT clone:
Senior exec at apple. Senior exec leaves apple. Senior exec starts company to create a media platform, a new OS. Senior execs has many critics that his company will fail.
We see what happened to NeXT, is Be the next takeover target of Apple? I'd be interested in hearing if anyone has any inside information on the relationship between Jobs and Jean-Louis Gasse' (founder of Be).
But back to the original point of my post, where has Be been? Can anyone name a Fortune 500 company using them? To me, as a professional in the industry, I would discount Be pretty quickly. It's too propietary, not well known and there are plenty of operating systems that could do the same thing. Hell Linux is free. I'm not meaning to bash Be, but someone tell me some good experiences with it.
Sun didn't disable them, because of the architecture of AWT and Swing, the components rely on "peer" components. The peer components are the native versions of the Java ones. So on a Mac you're not going to have Windows peer components because there are no libraries for drawing Windows UI components on a Mac. Now apply that to all the OS's. Duh.
I know you're a beginner, but you really need to get "the bible" (at least IMHO). Get "The Java Programming Language" by Ken Arnold and James Gosling. It is *the* book for reference on Java and has some good examples.
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Sorry Frank :) I really enjoyed reading (and reviewing) the book. I only wish more people didn't think software engineering was dead. I strongly disagree with the posts by "that crowd" in this message area.
Justin
DSL wasn't designed to be an open access standard any more than HFC or ISDN is. DSL wasn't designed from the ground up, it has roots in ISDN and is basically just a faster version.
Both technologies: HFC (cable) and DSL can be slow. Do you realize what's going on behind the scenes for each? Let me break it down for you:
When you get an ADSL or SDSL line through, let's say Northpoint (or Covad), they order a circuit for you from your local carrier (ie the Bells YMMV) that go from your house to the CO facilities. At the CO facilities there is a cross connect or a DS3 which channelizes all traffic for the city into the Northpoint facilities. Do you know what that means? It means they can oversubscribe that DS3 like a mutha fucker. I've heard of other companies overselling the DS3 3 to 5 times!!!
On the HFC side, you're in a much better situation. (IIRC) Net congestion happens in the various neighborhood where there are lots of users sending lots of traffic (ok, duh), so all the cable company has to do is add more lasernodes in the various places there is congestion and it will alleviate the load. Fiber is wonderful. There is also a chance to have bandwidth maximization at the cable headend where the DS3's come in, but that's easy, throw another DS3 on the fire and you're in business.
Secondly, the standardization of DSL equipment is awful. Everyone has a different DSLAM (circuit aggregator) and everyone has a different DSL bridge (Coppermoutain etc) and none of them integrate.
And lastly in favor of cable, it's much faster than ADSL and SDSL upstream and downstream (although some ISPs do rate limit customers).
What do you mean "having your eyeballs owned by a cable company"? Just because your cable mdoem provider has content doesn't mean you have to look at it. When I had my cable modem I didn't install anything of the extra content bells and whistles.
Well first of all this is good news. I work for Excite@Home so this is a boost to our morale and will hopefully improve our stock price. :)
My guess is that AOL will get acclimated with Time Warner and start to open up to keep with AT&T. By that time (2001, 2002) ATT will start letting in providers like Mindspring when Excite@Home's MSO partnerships are up in certain markets.
I think AT&T and Excite@Home are far ahead of AOL and the acquisition of Time Warner is just going to slow them down. I think it's ironic that they wanted open access so bad, then when we outmaneuvered them they got mad and bought a cable giant. Sure, there was a lot more to buying TW than open access, but it did play a large role. Watch out, AOL is the next "Microsoft" of the Internet.
Open access is bad mmmkay?
It'll be interested to see what happens when NT (windows?) 2000 comes out. I predict Linux will eclipse NT within the next 12-18 months. (It may have already eclipsed because of ftp downloads).
Quote: A denial of service attack is increasingly becoming a common networking prank. By deluging a Web site's equipment with too many requests for information, an attacker can effectively clog the system, slowing performance or altogether crashing the site.
:)
I wish there was more information on what really happened. So if Yahoo is serving millions and millions of hits a day, why can't their web site equipment handle a "deluge of requests for information"? Either it's a denial of service (which I interpret as someone sending malicious packets) or it's a deluge of requests. Which one is it? A DoS could be just that, a denial of service, but more often it's referred to as some kind of "ping bomb" or malicious packet right?
Heh, I noticed it's not on Yahoo's frontpage and I had to hunt to find it in the Yahoo news area on my.yahoo.com
God I get tired of saying this, just because something is derrived from BSD, doesn't make it "stolen" or from FreeBSD. I'm not sure if Be is derrived from Be or not, but it's not based off of FreeBSD.
Anonymous coward:
:) Until then I'll eagerly await Mac OSX DR3 (I'll probably get flamed for that)
Hey don't get me wrong, I'm not against Be, but I spend a lot of time researching and looking at emerging technologies and I just haven't seen Be pop up very much. I'm not saying Linux is the end all be all, but it is very ubiquitous. I'm very open to operating systems and I'd love to try out Be. At home I run IRIX, Windows, Linux, Mac OSX, Mac OS 9, so I'm not close minded by any means.
And there are Fortune 500 companies out there that use Linux as servers and desktop machines. It's very affordable, the software and device support is very lucrative.
So send me a copy of Be for Intel
justin
I have no personal feelings about Be, but I'd just like to ask, where has Be been? I've driven by their offices many times and browsed their webpage but that's the only exposure I've had with them :) Be really sounds like a NeXT clone:
Senior exec at apple.
Senior exec leaves apple.
Senior exec starts company to create a media platform, a new OS.
Senior execs has many critics that his company will fail.
We see what happened to NeXT, is Be the next takeover target of Apple? I'd be interested in hearing if anyone has any inside information on the relationship between Jobs and Jean-Louis Gasse' (founder of Be).
But back to the original point of my post, where has Be been? Can anyone name a Fortune 500 company using them? To me, as a professional in the industry, I would discount Be pretty quickly. It's too propietary, not well known and there are plenty of operating systems that could do the same thing. Hell Linux is free. I'm not meaning to bash Be, but someone tell me some good experiences with it.
You use enlightment don't you? :)
Sun didn't disable them, because of the architecture of AWT and Swing, the components rely
on "peer" components. The peer components are the
native versions of the Java ones. So on a Mac
you're not going to have Windows peer components
because there are no libraries for drawing
Windows UI components on a Mac. Now apply that
to all the OS's. Duh.
It is *not* stolen from FreeBSD, it's derrived from NeXT/OS. Sheesh. Just because it's BSD in nature doesn't mean it was stolen from FreeBSD.
MacOS X isn't built ontop of FreeBSD. It's built from a Mach kernel. It has roots in the NeXT OS.
I know you're a beginner, but you really need to get "the bible" (at least IMHO). Get "The Java Programming Language" by Ken Arnold and James Gosling. It is *the* book for reference on Java and has some good examples.