Download E-books Scaling CouchDB PDF

By Bradley Holt

This useful advisor bargains a quick path on scaling CouchDB to satisfy the capability wishes of your allotted software. via a sequence of scenario-based examples, this booklet allows you to discover numerous tools for making a approach which could accommodate development and meet anticipated call for. within the strategy, you find out about numerous instruments that may assist you with replication, load balancing, clustering, and cargo trying out and monitoring.

  • Apply functionality assistance for tuning your database
  • Replicate information, utilizing Futon and CouchDB’s RESTful interface
  • Distribute CouchDB’s workload via load balancing
  • Learn ideas for making a cluster of CouchDB nodes, together with BigCouch, front room, and Pillow
  • Conduct dispensed load checking out with Tsung

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Pl script package deal with Tsung: /usr/lib/tsung/bin/tsung_stats. pl * * * caution the positioning of the tsung_stats. pl script can be assorted in your checking out consumer. if that is so, it is important to find this script and run it from the perfect position. * * * If every thing works competently, a record. html dossier may be created during this comparable listing. Open this file and you may see numerous information and graphs. less than the information studies, the most records desk exhibits you the top 10 moment suggest, lowest 10 moment suggest, maximum expense, suggest, and count number for every a part of the HTTP connection. See desk 6-1 for a pattern major statistics file. desk 6-1. major statistics identify maximum 10sec suggest Lowest 10sec suggest maximum fee suggest count number attach zero. 27 sec zero. 663 msec 563. three / sec 10. seventy five msec 161433 web page 1. 15 sec three. ninety one msec 827. four / sec zero. 26 sec 229212 request 1. 15 sec three. ninety one msec 827. four / sec zero. 26 sec 229212 consultation 3min 29sec 6. forty-one sec 206. 1 / sec forty-one. forty-one sec 56619 Tsung lets you staff requests into transactions. A transaction should help while trying out an HTML web page as you'll team the requests for the HTML and all similar resources (e. g. , JavaScript, CSS, and photographs) into one transaction. we've not performed this right here, so your transactions records desk should be empty. The community throughput desk allows you to see the scale of the community site visitors bought and despatched. See desk 6-2 for a pattern community throughput record. desk 6-2. community throughput identify maximum price overall size_rcv three. 60 Mbits/sec 126. 19 MB size_sent 1. 01 Mbits/sec 35. eighty three MB The counter records reviews allow you to see the full variety of simulated clients and comparable statistics. See Tables 6-3 and 6-4 for pattern counter statistics studies. desk 6-3. Counter facts, first desk identify optimum expense overall quantity finish_users_count 206. 1 / sec 56619 fit 109. eight / sec 31041 match_stop zero. three / sec eleven nomatch zero. three / sec eleven users_count 196. three / sec 56620 desk 6-4. Counter facts, moment desk identify Max hooked up 2797 clients 8191 The HTTP go back code desk grants an inventory of go back codes with the top cost and overall quantity for every. See desk 6-5 for a pattern HTTP go back code file. during this pattern document, we will be able to see that we bought the two hundred okay reaction code 198,157 instances, and the top fee for that reaction code was once 713. 1 / sec. desk 6-5. HTTP go back code Code maximum fee overall quantity two hundred 713. 1 / sec 198157 201 eleven. five / sec 2832 304 a hundred. 2 / sec 28209 404 zero. three / sec eleven There also are a number of graphs experiences to be had. For all graphs, the x-axis represents a development of time during the try out. the 1st graph represents suggest transaction reaction time. The y-axis for this graph represents the suggest variety of milliseconds that the transaction reaction took in the course of a given second within the attempt. See determine 6-1 for an instance of this graph. determine 6-1. Graph of suggest transaction reaction time For the following graph, the y-axis represents the suggest variety of milliseconds that the request or connection institution took in the course of a given second within the try.

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