Changing Bits

Modern computers have wonderful hardware concurrency, within and across CPU cores, RAM and IO resources, which means your typical server-bas...

A few days ago I committed the new MemoryCodec to Lucene's trunk (to be 4.0). This codec indexes all terms and postings into a compact...

I looked into the curious issue I described in my last post , where the NRT reopen delays can become "spikey" (take longer) during...

Lucene's near-real-time (NRT) search feature, available since 2.9, enables an application to make index changes visible to a new searche...

It turns out, the Jira issue tracking system , which we make heavy use of here at Apache , uses Lucene under the hood for searching and bro...

A week ago , I described the nightly benchmarks we use to catch any unexpected slowdowns in Lucene's performance. Back then the graphs...

Lucene has great randomized tests to catch functional failures, but when we accidentally commit a performance regression (we slow down inde...

Imagine you love to cook; it's an intense hobby of yours. Over time, you've accumulated many fun spices , but your pantry is too sm...

Much has been said and asked about the differences between Stack Overflow and Quora . And, while there are deep and interesting differe...

I'm an avid subscriber of the delightful weekly (sometimes) Python-URL! email, highlighting the past week's interesting discussions ...

There are many exciting improvements in Lucene's eventual 4.0 (trunk) release, but the awesome speedup to FuzzyQuery really stands out,...

Are you a student? Looking to do some fun coding this summer? Then join us for the 2011 Google Summer of Code ! The application deadline i...