 | Acta Crystallographica Section D Acta Crystallographica Section D BIOLOGICAL CRYSTALLOGRAPHY |
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![[Figure 2]](ba5193fig2mag.jpg)
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Figure 2
Client–server architecture for a high-throughput Bragg spot analyzer. The illustrated client (a) is a web browser, but the client is usually the beamline component responsible for the raster scan, such as Blu-Ice (McPhillips et al., 2002  ) or GDA (Aishima et al., 2010), implemented in any language that supports the HTTP protocol. The server (b) is a multicore Linux system running the Apache httpd daemon, which delegates incoming requests to one of 48 parallel child processes, each of which runs Python-language cctbx code mediated by the mod_python package (c). The server returns text-based output identical to that produced by the command-line program distl.signal_strength. There is also an option for the returned text to be formatted in extensible markup language (XML) suitable for automated control-system clients. Full instructions are given at https://cci.lbl.gov/labelit/html/client_server.html
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![[Figure 2]](ba5193fig2.jpg)
| BIOLOGICAL CRYSTALLOGRAPHY |
ISSN: 1399-0047
