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How efficient can Meteor be while sharing a huge collection among many clients?
...onnection to its
client and updates its server-side in-memory copy.
Total CPU cost is the cost to diff one Mongo query, plus the cost of
1,000 merge boxes checking their clients' state and constructing a new
DDP message payload. The only data that flows over the wire is a single
JSON object sent t...
Linux日志切分工具:Logrotate - 更多技术 - 清泛网 - 专注C/C++及内核技术
...似的还有Verbose选项,这里就不多说了。
Logrotate的疑问
问题:sharedscripts的作用是什么?
大家可能注意到了,我在前面Nginx的例子里声明日志文件的时候用了星号通配符,也就是说这里可能涉及多个日志文件,比如:access.log和e...
求助!关于拓展模块NotificationStyle的demo运行时报错的问题 - App Invent...
我使用的是demo程序进行测试,拓展程序链接:
https://www.fun123.cn/reference/extensions/NotificationStyle.html
结果无论点什么按键都会报错:
edu.mit.appinventor.aicompanion3: Targeting S+ (version 31 and above) requires that one of FLAG_IMMUTABLE or FLAG_MUTABLE be...
马无夜草不肥——聊聊程序员接私活的那些坑 - 杂谈 - 清泛网 - 专注C/C++及内核技术
...,经常遇到是否能1000块开发出一个像淘宝那样的网站的问题,自身价值分分钟被贬低,差点被气得一口老血喷涌而出。
靠同学、朋友、同事介绍的渠道通常性价比要高,但有可以抱的大腿少哇。
二. 谈钱伤感情,不谈钱伤身...
TCP 的那些事儿(下) - 更多技术 - 清泛网 - 专注C/C++及内核技术
... 算法
但是上面的这个算法在重传的时候会出有一个终极问题——你是用第一次发数据的时间和ack回来的时间做RTT样本值,还是用重传的时间和ACK回来的时间做RTT样本值?
这个问题无论你选那头都是按下葫芦起了瓢。 如下图所...
Which would be better for concurrent tasks on node.js? Fibers? Web-workers? or Threads?
...it a lot. But soon I found out that it lacked badly the ability to perform CPU-intensive tasks. So, I started googling and got these answers to solve the problem: Fibers, Webworkers and Threads (thread-a-gogo). Now which one to use is a confusion and one of them definitely needs to be used - afteral...
I get a “An attempt was made to load a program with an incorrect format” error on a SQL Server repli
... dropdown, but the only item in the dropdown in both cases is "Active (Any CPU)".
– B. Clay Shannon
Aug 26 '13 at 19:12
...
Speed comparison with Project Euler: C vs Python vs Erlang vs Haskell
...me ./euler12-c
842161320
./euler12-c 11.95s
user 0.00s
system 99%
cpu 11.959 total
PyPy 1.5
% time pypy euler12.py
842161320
pypy euler12.py
16.44s user
0.01s system
99% cpu 16.449 total
RPython (using latest PyPy revision, c2f583445aee)
% time ./euler12-rpython-c
842161320
./eule...
海量数据相似度计算之simhash短文本查找 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...升级、增加机器,但有些时候光是增加机器已经解决不了问题了,就算增加机器也不是短时间能够解决的,需要考虑分布式、客户预算、问题解决的容忍时间?头大时候要相信人类的智慧是无穷的,泡杯茶,听下轻音乐:)畅想...
BLE(二)信道&数据包&协议栈格式 - 创客硬件开发 - 清泛IT社区,...
...一定频率范围下的频带资源(Frequency Band);
BLE的市场定位是个体和民用,因此使用免费的ISM频段(频率范围是2.400-2.4835 GHz);
为了同时支持多个设备,将整个频带分为40份,每份的带宽为2MHz,称作RF Channel。
所以经过上面...
