Uh, how often are you using the Internet to connect to a computer in your home town? Maybe 5% of the time?
I’ve never used Starlink, but with a basic understanding of geography and optics, I’m going to bet that in most scenarios the latency difference between Starlink and fiber is negligible, sometimes even being faster on Starlink, depending on the situation.
That said, I’m not suggesting Starlink is a realistic replacement for fiber, just that latency isn’t the big issue. (It has other serious issues)
Ok, so actual question, How useful are CDN endpoints these days with https everywhere? Because most encrypted content is unique to a single web user, caching isn’t super useful. Also you can’t cache live content like video calls or online games. I’d imagine the percentage of cacheable content is actually fairly low these days. But like I said, I don’t actually know the answer to this, i’d be curious to hear your take.
Edit: it’s weird to get down votes for a question.
HTTPS / TLS has little to do with it. Don’t think of the endpoint as a cache between you and the origin. The DNS name given to the endpoint is the origin from your browser’s perspective. How content gets cached on the backend is irrelevant to the browser.
Live video that someone else in your area is also watching is cacheable. Images to load a page, very cacheable. The personal stuff is mostly HTML specific to you but that’s quite small.
The point is, unless you’re playing some hyper competitive game where a 30ms difference in reaction time is noticeable (this is less than 1 frame in a fighting game, for example) Starlink works perfectly well. Lower numbers are better, but for games you only need to compare that number to human reaction times (150-200ms) to see that both are small values less than the reaction time of any person.
Previous satellite Internet using satellites in geosynchronous orbit had 1500ms latency, for comparison.
where a 30ms difference in reaction time is noticeable (this is less than 1 frame in a fighting game, for example)
You have some pretty bad understanding of how netcode works if you think a 30ms ping in an online multi-player game means your game or input is delayed by 30ms. It’s a lot more complicated than that, and especially in games with bad netcode you will absolutely notice a difference between 10ms or 30ms ping
Oh, please explain the complexity to me like I’m a system administrator with only 25 years of experience. I didn’t realize that computers could connect to each other over a network until 3 days ago, imagine my surprise.
You could start with the fact that many online game servers (ex: Valorant, Apex, Overwatch) artificially increase everyone’s latency at the server, except for the people with higher network latency in order to compensate for lag through a technique called lag compensation. So having 10 ms ping and 50 ms ping just means the server introduces a 40ms delay on the player with 10ms ping so both players experience the same latency.
Or maybe you could explain how game state updates happen with a set frequency and the gap between the state updates can also be adjusted by the server for each client so that state updates are sent to higher latency users earlier in the update window. I mean this technique is essentially lag compensation as well, but it applies to how the client updates are sent instead of being applied to incoming packets.
Or, you could avoid all this and simply declare me incorrect by pointing at a game that doesn’t use lag compensation or otherwise move the goal posts so that you don’t actually have to explain the complexity that you were hinting at.
Previous satellite Internet using satellites in geosynchronous orbit had 1500ms latency, for comparison.
Yes, and are far more stable, not hyped, and are already at pretty much peak congestion. Starlink will get progressively worse, the more people use it. Right now, it’s over provisioned.
The point is, unless you’re playing some hyper competitive game where a 30ms difference in reaction time is noticeable (
Yes, and are far more stable, not hyped, and are already at pretty much peak congestion. Starlink will get progressively worse, the more people use it. Right now, it’s over provisioned.
They were not more stable. Any occlusion, including thick clouds, would degrade the signal to being unusable. I used Hughsnet for years, then swapped to cellular (100ms+ latency) and finally to Starlink. Starlink is a pretty solid 100Mb/s, with low jitter, packet loss and latency.
Ever try a voice call with 30ms of latency?
Yeah, I use voice chat every day, it’s not noticeable.
No, because the Starlink satellites are 350 miles above the Earth while geosynchronous satellites are 13,000 miles above the earth. Because of the Inverse-Square Law they can transmit a signal that is orders of magnitude stronger.
In addition, geosync satellites are locked at a single fixed position and received by a single dish antenna so any obstruction along the line will disrupt the signal.
Starlink’s recievers use a 1200 element x-band phased array so it can lock on to multiple sources and track them as they move across the sky. Each satellite link is its own channel. Losing contact with one satellite simply causes the data to be routed to one of the 4-5 other locked satellites.
The people on the call do…
30ms of latency is less than 1/3rd of the latency of most Bluetooth headsets that people use every day to talk on their phones. It is not noticeable at all.
all you can eat latency and an oversaturated network on devices with a limited lifespan… what else could you ask for!
Starlink has much better latency than most satellites, but still 10 to 50 times as much as fiber.
ha yeah… not having to make a 340 mile round trip instead of the hundreds of feet to the nearest router will do that
Uh, how often are you using the Internet to connect to a computer in your home town? Maybe 5% of the time?
I’ve never used Starlink, but with a basic understanding of geography and optics, I’m going to bet that in most scenarios the latency difference between Starlink and fiber is negligible, sometimes even being faster on Starlink, depending on the situation.
That said, I’m not suggesting Starlink is a realistic replacement for fiber, just that latency isn’t the big issue. (It has other serious issues)
Much more frequently than you think with CDN endpoints.
Ok, so actual question, How useful are CDN endpoints these days with https everywhere? Because most encrypted content is unique to a single web user, caching isn’t super useful. Also you can’t cache live content like video calls or online games. I’d imagine the percentage of cacheable content is actually fairly low these days. But like I said, I don’t actually know the answer to this, i’d be curious to hear your take.
Edit: it’s weird to get down votes for a question.
HTTPS / TLS has little to do with it. Don’t think of the endpoint as a cache between you and the origin. The DNS name given to the endpoint is the origin from your browser’s perspective. How content gets cached on the backend is irrelevant to the browser. Live video that someone else in your area is also watching is cacheable. Images to load a page, very cacheable. The personal stuff is mostly HTML specific to you but that’s quite small.
HTTPS can in fact be cached, and most modern browsers will do so unless given a header or something to tell it not to.
Source: Devtools network tab + https://developer.mozilla.org/en-US/docs/Web/HTTP/Guides/Caching
Just for reference, I get about 45-50 ping playing Marvel Rivals on Starlink.
On fiber, while I don’t play that game, I’ve never seen a ping longer than 10-13msecs.
The point is, unless you’re playing some hyper competitive game where a 30ms difference in reaction time is noticeable (this is less than 1 frame in a fighting game, for example) Starlink works perfectly well. Lower numbers are better, but for games you only need to compare that number to human reaction times (150-200ms) to see that both are small values less than the reaction time of any person.
Previous satellite Internet using satellites in geosynchronous orbit had 1500ms latency, for comparison.
You have some pretty bad understanding of how netcode works if you think a 30ms ping in an online multi-player game means your game or input is delayed by 30ms. It’s a lot more complicated than that, and especially in games with bad netcode you will absolutely notice a difference between 10ms or 30ms ping
Oh, please explain the complexity to me like I’m a system administrator with only 25 years of experience. I didn’t realize that computers could connect to each other over a network until 3 days ago, imagine my surprise.
You could start with the fact that many online game servers (ex: Valorant, Apex, Overwatch) artificially increase everyone’s latency at the server, except for the people with higher network latency in order to compensate for lag through a technique called lag compensation. So having 10 ms ping and 50 ms ping just means the server introduces a 40ms delay on the player with 10ms ping so both players experience the same latency.
Or maybe you could explain how game state updates happen with a set frequency and the gap between the state updates can also be adjusted by the server for each client so that state updates are sent to higher latency users earlier in the update window. I mean this technique is essentially lag compensation as well, but it applies to how the client updates are sent instead of being applied to incoming packets.
Or, you could avoid all this and simply declare me incorrect by pointing at a game that doesn’t use lag compensation or otherwise move the goal posts so that you don’t actually have to explain the complexity that you were hinting at.
Yes, and are far more stable, not hyped, and are already at pretty much peak congestion. Starlink will get progressively worse, the more people use it. Right now, it’s over provisioned.
Ever try a voice call with 30ms of latency?
They were not more stable. Any occlusion, including thick clouds, would degrade the signal to being unusable. I used Hughsnet for years, then swapped to cellular (100ms+ latency) and finally to Starlink. Starlink is a pretty solid 100Mb/s, with low jitter, packet loss and latency.
Yeah, I use voice chat every day, it’s not noticeable.
You have the same issue with Starlink…
The people on the call do…
No, because the Starlink satellites are 350 miles above the Earth while geosynchronous satellites are 13,000 miles above the earth. Because of the Inverse-Square Law they can transmit a signal that is orders of magnitude stronger.
In addition, geosync satellites are locked at a single fixed position and received by a single dish antenna so any obstruction along the line will disrupt the signal.
Starlink’s recievers use a 1200 element x-band phased array so it can lock on to multiple sources and track them as they move across the sky. Each satellite link is its own channel. Losing contact with one satellite simply causes the data to be routed to one of the 4-5 other locked satellites.
30ms of latency is less than 1/3rd of the latency of most Bluetooth headsets that people use every day to talk on their phones. It is not noticeable at all.