I started to design a wcf service bus that is now very small, but it grows as our business grows, so I am worried about some problems and will not try YAGNI too much. This is An e-commerce platform
Tag: data
If the data center fails, how to fail over Azure ACS
We are looking for a way to provide failover for ACS instances, so if one data center goes offline, authentication by ACS will automatically fail over to another data center. < p>
Background:
Wicket Cluster Session Storage, Page Storage, Data Storage
I am dealing with custom implementations of wicket session storage, data storage, and page storage. I have cu cluster wicket and make it work in the following situations:
My question is: Has
Protocol (Network Data Exchange Rule)
Protocol is a rule, standard or agreement established for data exchange in the network. Used for communication between entities in different systems. In order for two entities to communicate, they
TDD Data Access Layer
In TDD, I have been testing business logic by simulating data access functions.
But in fact I also need to implement the layers below the business layer to make the application work properly.
<
Returns a Data.Table aggregation of the vector, such as scale ()
I recently used a larger data set, and started to learn and migrate to data.table to improve the performance of aggregation/grouping. I can’t convert certain expressions or Function grouping. The
Multiple aggregation and expansion – Spring Data MongoDB
I have a mongo query to expand four object arrays and filter data based on matching conditions. How do I perform the same operation in Spring Data mongodb
db.generator.aggregate([
{ $unwind :
Database – data aggregation in microseconds in KDB units
How to use the xbar function to aggregate the rows in a table in a 10-microsecond column. The table consists of the columns timestamp and val. For aggregation in milliseconds, I already know that I
How to use custom column names (using “by”) Data.Table without using “: =”?
I know I can do this
a <- dt[,sum(x), by=y ] I can do this too
dt[,z:=sum(x), by=y] # this would modify dt But I don’t know why I can’t do this:
a <- dt[,z=sum(x), by=y] < p>How t
ASP.NET hierarchical application – sharing entity data model between layers
How can I share the automatically generated entity data model (generated object class) in all layers of my C# Web application, while granting query access only in the data layer? This uses the typi