Comparing Solr and Elasticsearch – My presentation

I presented at the Lucene/Solr Revolution 2014 in November, comparing Solr and Elasticsearch. The target audience was a technical person who wants to understand how similar (mostly Lucene) concepts are expressed in these two products.

The presentation was only 30 minutes, so I could go into the subject as deep as I initially hoped. But the room was more than full and people came up to me afterwards saying that they really liked the comparison and found it helpful.

The slides are available already and the video should hopefully be out soon as well.

Leanpub recipe: versioned book backups

Leanpub is a platform for publishing books that gives author control and tools beyond those available from traditional publishers. I used it to test an idea for a Solr Clients book and was able to validate its lack of traction without spending a cent.

One of the great features of Leanpub is that a book can be updated and the readers get notified of the new version. Consequently, it is sometime useful to keep the old versions around for the author and sometimes even for the readers.

This feature is not currently present in Leanpub, but we can add that with a bit of a glue from Zapier – web automation service.┬áThis is especially useful if you are using GitHub to edit your book with automatic preview and want a full end-to-end edit-preview experience without having to touch the Leanpub website.

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Javadoc custom doclets – fun, frustration and forward motion

Javadoc is default – and often only – documentation for open source Java projects. It is generated automatically and can just be dumped on any public-facing server as a bunch of static files. Or even bundled with the distribution, if size is not an issue.

However, as project grows, several issues with using Javadoc documentation become apparent. The main issue is that Javadoc (yes, even JDK 8 one) uses frames and JavaScript for navigating the packages and classes. Which breaks any sort of direct linking to the content as well as discoverability by search engine. Yes, there are NO FRAMES links, but then the navigation becomes really cumbersome. The second issue is that generated Javadoc is using rather old HTML standards and is really not designed for Search Engine Optimization. Which means that search engines usually end up discovering random entry points following somebody’s old blog post.

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> From inner thoughts to outer limits of Alexandre Rafalovitch