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How reusing connections results in efficient networking on android?
How to efficiently count the number of keys/properties of an object in JavaScript?How do save an Android Activity state using save instance state?How to check if a service is running on Android?Why is the Android emulator so slow? How can we speed up the Android emulator?How do I pass data between Activities in Android application?How do I display an alert dialog on Android?How can I connect to Android with ADB over TCP?How do I rotate the Android emulator display?How to manage startActivityForResult on Android?Comparison of Android networking libraries: OkHTTP, Retrofit, and Volley
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I was going through the android docs for Efficient Network Access. I got the data prefetching part as well as the batch transfer approach, basic crux behind both of them being
Don't keep the network radio in active state all the time. let it go to stand by state at regular intervals
However, proceeding to the next section, Reduce Connections, I am still not clear with some of the statements. They are:
Reusing connections also allows the network to more intelligently react to congestion and related network data issues
and
it would be more efficient to make a single request for every news article to be returned in a single request / response than to make multiple queries for several news categories
and
A useful compromise is not to close the connection immediately, but to still close it before the inherent timeout expires
Can someone please explain these statements in detail?
android performance android-networking asked Mar 23 at 12:58
YashasviYashasvi
3,19622147
add a comment |
I was going through the android docs for Efficient Network Access. I got the data prefetching part as well as the batch transfer approach, basic crux behind both of them being
Don't keep the network radio in active state all the time. let it go to stand by state at regular intervals
However, proceeding to the next section, Reduce Connections, I am still not clear with some of the statements. They are:
Reusing connections also allows the network to more intelligently react to congestion and related network data issues
and
it would be more efficient to make a single request for every news article to be returned in a single request / response than to make multiple queries for several news categories
and
A useful compromise is not to close the connection immediately, but to still close it before the inherent timeout expires
Can someone please explain these statements in detail?
android performance android-networking asked Mar 23 at 12:58
YashasviYashasvi
3,19622147
Regarding the second quote, a single request/response for N items will involve less data transfer than will N requests/responses for 1 item each, as each request and response adds overhead (e.g., HTTP headers). This gets worse if you are not reusing connections and we have to create and tear down sockets for each request/response. And, this gets all the worse if you are using HTTPS (which you should!), as we have to do all of the TLS handshaking N times.
– CommonsWare
Mar 23 at 13:02
hmm, makes sense. I was only thinking in the direction of whether the duration for which network radio keeps awake will be reduced. I think it's not guarranteed, but on average it definitely will. In case where I am getting the whole data in just 1 request, server might also take longer to send response. But considering the handshake times also as you mentioned, it's a no-brainer then to use a single connection.
– Yashasvi
Mar 23 at 14:02
add a comment |
I was going through the android docs for Efficient Network Access. I got the data prefetching part as well as the batch transfer approach, basic crux behind both of them being
Don't keep the network radio in active state all the time. let it go to stand by state at regular intervals
However, proceeding to the next section, Reduce Connections, I am still not clear with some of the statements. They are:
Reusing connections also allows the network to more intelligently react to congestion and related network data issues
and
it would be more efficient to make a single request for every news article to be returned in a single request / response than to make multiple queries for several news categories
and
A useful compromise is not to close the connection immediately, but to still close it before the inherent timeout expires
Can someone please explain these statements in detail?
android performance android-networking asked Mar 23 at 12:58
YashasviYashasvi
3,19622147
I was going through the android docs for Efficient Network Access. I got the data prefetching part as well as the batch transfer approach, basic crux behind both of them being
Don't keep the network radio in active state all the time. let it go to stand by state at regular intervals
However, proceeding to the next section, Reduce Connections, I am still not clear with some of the statements. They are:
Reusing connections also allows the network to more intelligently react to congestion and related network data issues
and
it would be more efficient to make a single request for every news article to be returned in a single request / response than to make multiple queries for several news categories
and
A useful compromise is not to close the connection immediately, but to still close it before the inherent timeout expires
Can someone please explain these statements in detail?
android performance android-networking android performance android-networking asked Mar 23 at 12:58
YashasviYashasvi
3,19622147
asked Mar 23 at 12:58
YashasviYashasvi
3,19622147
asked Mar 23 at 12:58
YashasviYashasvi
3,19622147
asked Mar 23 at 12:58
YashasviYashasvi
3,19622147
asked Mar 23 at 12:58
YashasviYashasvi
3,19622147
3,19622147
Regarding the second quote, a single request/response for N items will involve less data transfer than will N requests/responses for 1 item each, as each request and response adds overhead (e.g., HTTP headers). This gets worse if you are not reusing connections and we have to create and tear down sockets for each request/response. And, this gets all the worse if you are using HTTPS (which you should!), as we have to do all of the TLS handshaking N times.
– CommonsWare
Mar 23 at 13:02
hmm, makes sense. I was only thinking in the direction of whether the duration for which network radio keeps awake will be reduced. I think it's not guarranteed, but on average it definitely will. In case where I am getting the whole data in just 1 request, server might also take longer to send response. But considering the handshake times also as you mentioned, it's a no-brainer then to use a single connection.
– Yashasvi
Mar 23 at 14:02
add a comment |
Regarding the second quote, a single request/response for N items will involve less data transfer than will N requests/responses for 1 item each, as each request and response adds overhead (e.g., HTTP headers). This gets worse if you are not reusing connections and we have to create and tear down sockets for each request/response. And, this gets all the worse if you are using HTTPS (which you should!), as we have to do all of the TLS handshaking N times.
– CommonsWare
Mar 23 at 13:02
hmm, makes sense. I was only thinking in the direction of whether the duration for which network radio keeps awake will be reduced. I think it's not guarranteed, but on average it definitely will. In case where I am getting the whole data in just 1 request, server might also take longer to send response. But considering the handshake times also as you mentioned, it's a no-brainer then to use a single connection.
– Yashasvi
Mar 23 at 14:02
Regarding the second quote, a single request/response for N items will involve less data transfer than will N requests/responses for 1 item each, as each request and response adds overhead (e.g., HTTP headers). This gets worse if you are not reusing connections and we have to create and tear down sockets for each request/response. And, this gets all the worse if you are using HTTPS (which you should!), as we have to do all of the TLS handshaking N times.
– CommonsWare
Mar 23 at 13:02
Regarding the second quote, a single request/response for N items will involve less data transfer than will N requests/responses for 1 item each, as each request and response adds overhead (e.g., HTTP headers). This gets worse if you are not reusing connections and we have to create and tear down sockets for each request/response. And, this gets all the worse if you are using HTTPS (which you should!), as we have to do all of the TLS handshaking N times.
– CommonsWare
Mar 23 at 13:02
hmm, makes sense. I was only thinking in the direction of whether the duration for which network radio keeps awake will be reduced. I think it's not guarranteed, but on average it definitely will. In case where I am getting the whole data in just 1 request, server might also take longer to send response. But considering the handshake times also as you mentioned, it's a no-brainer then to use a single connection.
– Yashasvi
Mar 23 at 14:02
hmm, makes sense. I was only thinking in the direction of whether the duration for which network radio keeps awake will be reduced. I think it's not guarranteed, but on average it definitely will. In case where I am getting the whole data in just 1 request, server might also take longer to send response. But considering the handshake times also as you mentioned, it's a no-brainer then to use a single connection.
– Yashasvi
Mar 23 at 14:02
add a comment |
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Regarding the second quote, a single request/response for N items will involve less data transfer than will N requests/responses for 1 item each, as each request and response adds overhead (e.g., HTTP headers). This gets worse if you are not reusing connections and we have to create and tear down sockets for each request/response. And, this gets all the worse if you are using HTTPS (which you should!), as we have to do all of the TLS handshaking N times.
– CommonsWare
Mar 23 at 13:02
hmm, makes sense. I was only thinking in the direction of whether the duration for which network radio keeps awake will be reduced. I think it's not guarranteed, but on average it definitely will. In case where I am getting the whole data in just 1 request, server might also take longer to send response. But considering the handshake times also as you mentioned, it's a no-brainer then to use a single connection.
– Yashasvi
Mar 23 at 14:02