Has anyone been sucessful in compiling the io as a separate module? I've tried in two machines now (one running CentOS and the other one has Ubuntu 11.04) and always got the same compilation error I wrote in the previous mail.
Thanks Nelson R. Pérez PS. Here's the error msg: ------------------------------------------------------------------------------------------------------------------------------------------------------------- DNS.cc: In member function ‘virtual int DNSProcessor::start(int)’: DNS.cc:132:7: error: ‘SplitDNSConfig’ has not been declared DNS.cc:134:5: error: ‘SplitDNSConfig’ has not been declared DNS.cc: In member function ‘void DNSEntry::init(const char*, int, int, Continuation*, DNSHandler*, int)’: DNS.cc:261:19: error: ‘INK_NOWARN’ was not declared in this scope ------------------------------------------------------------------------------------------------------------------------------------------------------------- On Tue, May 10, 2011 at 7:36 PM, John Plevyak <jplev...@acm.org> wrote: > I really need to generate some documentation on this. > > The structure of the cache is a cyclone buffer (circular buffer). > Documents over 2MB are broken into fragments. The 'head' > (which for HTTP includes a vector of headers for the alternate versions > of documents (think encodings in your case) appears at the "end", so > any document which has a "head" and a "first" fragment has all the > fragments in the cache. > > The "directory" is highly optimized hash from CacheKey (MD5) to > offset, size pairs for fragments. For multi-fragment documents the head > contains a map from offsets -> CacheKeys for the fragments. > > Is it possible to read from outside.... on a fully synced system which > isn't running, yes. On a running system, it would be very hard as > (like any file system) the disk image not completely in sync with the > in-core directory and the cache deletes and updates documents and will > evacuate (think log cleaning) fragments which are in use but > about to be overwritten. On restart from a unclean shutdown (frankly the > normal kind if you are like me and use control-c to shut it down, the > disk image needs to be brought back to consistency on startup which > requires > running through the log of writes. > > You would be better off just writing your code within ATS or using the > iocore > as a separate module via configure --enable-standalone-iocore > > As of 2.1.8 the cache should work very well for video content as it > supports > 2MB fragments and large disks efficiently. 2.0.1 breaks documents into 32K > chunks and disks into 8GB chunks which is terrible for video. > > You could either do video over HTTP or write your own protocol handler. At > some point > I'll release an example of that. > > john
