Redis will be faster than Postgres because Pg offers reliability guarantees on your data (when the transaction is committed, it is guaranteed to be on disk), whereas Redis has a concept of writing to disk when it feels like it, so shouldn’t be used for critical data. Redis seems like a good option for your … Read more
To check it for particular release: java -XX:-AggressiveOpts -XX:+UnlockDiagnosticVMOptions -XX:+PrintFlagsFinal -version > no_agg java -XX:+AggressiveOpts -XX:+UnlockDiagnosticVMOptions -XX:+PrintFlagsFinal -version > agg And then make diff (diff -U0 no_agg agg). For example, jdk 1.7.0_51: – bool AggressiveOpts := false {product} + bool AggressiveOpts := true {product} – intx AutoBoxCacheMax = 128 {C2 product} + intx AutoBoxCacheMax = … Read more
Another example is a strict left fold. You can write an applicative instance which allows you to compose folds so that the resulting fold can be performed on the data in a single pass and constant space. However, the monad instance needs to re-iterate from the beginning of the data for each bind and keep … Read more
SOAP is designed to be abstract enough to use other transports besides HTTP. That means, among other things, that it does not take advantage of certain aspects of HTTP (mostly RESTful usage of URLs and methods, e.g. PUT /customers/1234 or GET /customers/1234). SOAP also bypasses existing TCP/IP mechanisms for the same reason – to be … Read more
There’s few very simple steps to achieve a faster application. There’s three things that can always be considered. ZF2 Performance QuickTipp #1 – ViewModels Always manually assign the fully qualified script to render. This will increase the performance a little. It’s done like this: public function someAction() { $viewModel = new ViewModel(); $viewModel->setTemplate(‘MODULE / CONTROLLER … Read more
Summary: Antialiasing subpixel thickness lines is hard work and requires a number of dirty tricks to output what we intuitively expect to see. The extra effort you’re seeing is almost certainly due to antialiasing. When the line thickness is less than one pixel and the line doesn’t sit squarely at the center of a row … Read more
The best reference is the Intel Optimization Manual, which provides fairly detailed information on architectural hazards and instruction latencies for all recent Intel cores, as well as a good number of optimization examples. Another excellent reference is Agner Fog’s optimization resources, which have the virtue of also covering AMD cores. Note that specific cost models … Read more
Try go install -a github.com/mattn/go-sqlite3 which will install the compiled-against-Go-1.3 package into your $GOPATH. Right now, you likely have an older version installed under $GOPATH/pkg/ and therefore Go is recompiling it for every build.
Another thing you have to understand about the lack of optimization is that it’s compounded. A large portion of Rakudo is written in Perl 6. So for example the [+] operator is implemented by the method Any.reduce (called with $expression set to &infix:<+>), which has as its inner loop for @.list { @args.push($_); if (@args … Read more