大约有 43,000 项符合查询结果（耗时：0.0241秒） [XML]
Approximate cost to access various caches and main memory?
...5 cycles ( 40.2 - 22.5 ns )
remote L3 CACHE (Ref: Fig.1 [Pg. 5]) ~100-300 cycles ( 160.7 - 30.0 ns )
local DRAM ~60 ns
remote DRAM ~100 ns
EDIT2:
The most important is the notice under the...
How useful/important is REST HATEOAS ( maturity level 3)?
... "_links": {
"self": {
"href": "https://hostname/api/v1/posts/1",
"actions": {
"read": "GET",
"update": "PUT",
"delete": "DELETE"
}
}
},
"_embedded": {
"owner": {
"id": 1...
Adding information to an exception?
...d:
2017-09-06 16:50:14,797 [ERROR] django.request: Internal Server Error: /v1/sendEmail/
Traceback (most recent call last):
File "venv/lib/python3.4/site-packages/rest_framework/views.py", line 275, in get_permissions
return [permission() for permission in self.permission_classes]
TypeError: 'ty...
MySQL vs MongoDB 1000 reads
...
Do you have concurrency, i.e simultaneous users ? If you just run 1000 times the query straight, with just one thread, there will be almost no difference. Too easy for these engines :)
BUT I strongly suggest that you build a true load testing session, which means using an injector such as ...
How to crop an image in OpenCV using Python
...emory waste.
Suppose you load N images each is >1MP and you need only 100x100 region from the upper left corner.
Slicing:
X = []
for i in range(N):
im = imread('image_i')
X.append(im[0:100,0:100]) # This will keep all N images in the memory.
# Because t...
Pandas percentage of total with groupby
...id': list(range(1, 7)) * 2,
'sales': [np.random.randint(100000, 999999)
for _ in range(12)]})
state_office = df.groupby(['state', 'office_id']).agg({'sales': 'sum'})
# Change: groupby state_office and divide by sum
state_pcts = state_office.groupby(lev...
How to get overall CPU usage (e.g. 57%) on Linux [closed]
...ake a look at cat /proc/stat
grep 'cpu ' /proc/stat | awk '{usage=($2+$4)*100/($2+$4+$5)} END {print usage "%"}'
EDIT please read comments before copy-paste this or using this for any serious work. This was not tested nor used, it's an idea for people who do not want to install a utility or for s...
SVN upgrade working copy
... higher than the version in netbeans. In my case Netbeans (v7.3.1) had SVN v1.7 and I'd just upgraded my SVN to v1.8.
If you look in Tools > Options > Miscellaneous (tab) > Versioning (tab) > Subversion (pane), set the Preferred Client = CLI, then you can set the path the the installed...
How can I custom-format the Autocomplete plug-in results?
... if you monkey-patch autocomplete.
In the autocomplete widget included in v1.8rc3 of jQuery UI, the popup of suggestions is created in the _renderMenu function of the autocomplete widget. This function is defined like this:
_renderMenu: function( ul, items ) {
var self = this;
$.each( it...
Pass in an array of Deferreds to $.when()
...alCity) {
return $.ajax({
url: 'https://restcountries.eu/rest/v1/capital/'+capitalCity,
success: function(response) {
},
error: function(response) {
console.log("Error")
}
});
}
$(function(){
var capitalCities = ['Delhi', 'Beijin...