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Websocket API to replace REST API?
...sages any time, and if they are waiting for a particular message, they can queue other messages for processing later, reorder queued messages, ignore pushed messages depending on app state, etc. I'll never write another REST-based application again. Flash makes it easy too, with open-source AS3-base...
How to detect when cancel is clicked on file input?
...ails
I used setTimeout() rather than setInterval() because the latter can queue multiple invocations which execute immediately after each other. This could drastically increase the noise in our data, so I stuck with setTimeout() even though it is a little more complicated to do so.
These particula...
Verifying a specific parameter with Moq
...me time back (Phil Haack perhaps?) had setup returning from some kind of dequeue object - each time the function was called it would pull an item from a queue.
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When should I use a table variable vs temporary table in sql server?
...se for this might be logging the progress of different steps in a long SQL batch.
When using a #temp table within a user transaction locks can be held longer than for table variables (potentially until the end of transaction vs end of statement dependent on the type of lock and isolation level) and ...
Microsecond timing in JavaScript
... My wall clock is atomic.
– programmer5000
Feb 21 '17 at 18:16
4
new Date.getTime(...
Are Stored Procedures more efficient, in general, than inline statements on modern RDBMS's? [duplica
... the SQL statement across the network. With sprocs, you can execute SQL in batches, which is also more efficient.
Caching query plan -- the first time the sproc is executed, SQL Server creates an execution plan, which is cached for reuse. This is particularly performant for small queries run frequen...
How should I unit test threaded code?
...e blocking or non-blocking, callers may obtain futures, data may arrive at queues or need to be dequeued. There are many combinations possible here; white box away. Still requires multiple mock threads to make calls to the object under test.
As an aside:
In internal developer training that I do...
If REST applications are supposed to be stateless, how do you manage sessions?
...pass RESTful requests around blindly and successfully.
What if I had a queue of messages, and my user wanted to read the messages, but as he read them, wanted to block certain senders messages coming through for the duration of his session?
If the user wants a filter, then simply provide the f...
Cluster analysis in R: determine the optimal number of clusters
...t.obj)
css.obj <- css.hclust(dist.obj,hclust.obj)
elbow.obj <- elbow.batch(css.obj)
k <- elbow.obj$k
return(k)
}
Running Elbow parallel
no_cores <- detectCores()
cl<-makeCluster(no_cores)
clusterEvalQ(cl, library(GMD))
clusterExport(cl, list("data.clustering", "data.con...
How to check which locks are held on a table
...an we check which database locks are applied on which rows against a query batch?
6 Answers
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