scale

Best practice or design to scale out/horizontal scale database for microservices

ε祈祈猫儿з 提交于 2019-12-11 02:22:40
问题 The main benefit of Microservices are one Service “Type” can be scale out by using multiple container instances and load-balancing to improve through put. But one things is, multiple instances (ie. containers) of a "Service Type" are sharing the same database instance; and this could leave to performance bottle neck when multiple instance write/read on that database instance. Traditionally, we would scale up on the processing power of that database instance to meet high demand. The main

Scale down Bitmap from resource in good quality and memory efficient

*爱你&永不变心* 提交于 2019-12-11 02:05:46
问题 I want to scale down a 500x500px resource to fit always a specific size which is determined by the width of the screen. Currently I use the code from the Android Developers Site (Loading Large Bitmaps Efficiently), but the quality is not as good as I would use the 500x500px resource in a ImageView (as source in xml) and just scale the ImageView and not the Bitmap. But it's slow and I want to scale the Bitmap , too, to be memory efficient and fast. Edit: The drawable which I wanna scale is in

Changing a continuous scale from decimal to percents

元气小坏坏 提交于 2019-12-11 00:29:25
问题 The scale for penetration is listed as a decimal (.5 and down), but I am having a problem changing it to a percent. I tried to format it in my data as a percentage using this code penetration_levels$Penetration<-sprintf("%.1f %%", 100*penetration_levels$Penetration) which worked from a format sense, but when I tried to graph the plot I got an error saying penetration was used as a discrete, not continuous scale. To fix that, used this code to format it as a numeric variable penetration_levels

NVD3 Logarithmic Y axis with barchart

≡放荡痞女 提交于 2019-12-10 23:14:36
问题 I have a barchart made with NVD3 that shows datas with a huge gap between min value and max value. This makes the chart not really nice/usefull. Example : Y value are between 4,000 and 60,000 then some value are near 3m. I would like to have an Y Axis value increasing logarithmically, that show something like this (see the y Axis) : I tried to change yAxis scale, yAxis Domain, but didn't find any working solution (FYI: I use nvd3 through angularJs directives) 回答1: This will work for you chart

Is there a Scale Controls in google map SDK for iOS ?

橙三吉。 提交于 2019-12-10 23:08:09
问题 I want to use Scale controls in the google map for iOS,but I found nothing in the document of google map SDK for iOS about scale controls.Is there a Scale Controls in google map SDK for iOS ? 回答1: You need to use zoom levels in GMSCameraPosition by providing lang, lat values. GMSCameraPosition Class Reference (float) zoom [read, assign] Zoom level. Zoom uses an exponentional scale, where zoom 0 represents the entire world as a 256 x 256 square. Each successive zoom level increases

How to allow zooming of UIWebView (tried everything)

∥☆過路亽.° 提交于 2019-12-10 21:21:01
问题 I have tried literally every bit of code I have found to try and make this one page zoom in and out but no matter what, the text still overlaps the screen and the page in the UIWebView will simply not fit to the screen. I've tried instructions here: http://www.iphonedevsdk.com/forum/iphone-sdk-development/9112-uiwebview-zoom-pinch.html I've tried adding: webView.scalesPageToFit = TRUE; I've set it to UserInteractionEnabled . But nothing seems to work at all. Is this to do with the coding of

How to Scale a .bmp Image using C++ and just the iostream and stdio headers?

邮差的信 提交于 2019-12-10 20:28:27
问题 I am currently doing my first programming assignment in C++, and my objective is to Scale a Bitmap image using just the basic IO headers. I've used http://en.wikipedia.org/wiki/BMP_file_format#DIB_header_.28bitmap_information_header.29 as my reference guide to finding the Header information. My problem is creating an algorithm to scale the image up in terms of adding in individual pixels. I have made a series of for loops which are commented (They use the header information to determine how

How to scale colour in ggplot for independent layer?

喜夏-厌秋 提交于 2019-12-10 20:10:32
问题 I have a data set that documents the energy use of three buildings. I have a melted data frame that can be mimicked from the diamonds set: data <- melt(diamonds[,c('depth','table','cut','color')],id=c('cut','color')) Essentially, I have heating ('depth') and cooling ('table') data for each month('cut') from three different buildings (7 'color' factors). I would like to plot the three buildings (7 'color' factors) side by side in a bar plot for each month ('cut'). I want the bars representing

transform: scale - dealing with remaining 'margin' of initial size

跟風遠走 提交于 2019-12-10 17:29:16
问题 I'm using an iframe element as a preview window for mixed video and image content. A scaled down iframe works well, as it allows our clients to view an image close to how it would appear on their TV screen. I want to add some buttons below the iframe, however the button appears well below the iframe, conforming to the unscaled size of the iframe. What is the best method for dealing with the original margin space? HTML: <iframe id="iframe" width="1920" height="1080" src="https://jsfiddle.net/"

How can i get the current scale of a webView(android)

Deadly 提交于 2019-12-10 17:14:51
问题 getScale () was deprecated in API level 17. so , how can i get the current scale of a webview. i tried to override the method onScaleChanged, but it won`t be called unless i change the scale... 回答1: I know this question is a bit old, but this may help someone (like me), especially if someone wants to override WebView and add onTouch listener, to detect WebView's content end. You can use: getResources().getDisplayMetrics().density instead of webView.getScale() which is deprecated. It is the