python - How to improve the retrieve Query performance in ArangoDB 2.7 with increasing the number of documents within a single collection -


i have stored data in arangodb 2.7 in following format:

    {"content": "book.xml", "type": "string", "name": "name", "key": 102}     {"content": "d:/xmlexample/book.xml", "type": "string", "name": "location", "key": 102}     {"content": "xml", "type": "string", "name": "mime-type", "key": 102}     {"content": 4130, "type": "string", "name": "size", "key": 102}     {"content": "sun aug 25 07:53:32 2013", "type": "string", "name": "created_date", "key": 102}     {"content": "wed jan 23 09:14:07 2013", "type": "string", "name": "modified_date", "key": 102}     {"content": "catalog", "type": "tag", "name": "root", "key": 102}     {"content": "book", "type": "string", "name": "tag", "key": 103}      {"content": "bk101", "type": {"py/type": "__builtin__.str"}, "name": "id", "key": 103}     {"content": "gambardella, matthew", "type": {"py/type": "__builtin__.str"}, "name": "author", "key": 1031}    {"content": "xml developer's guide", "type": {"py/type": "__builtin__.str"}, "name": "title", "key": 1031}     {"content": "computer", "type": {"py/type": "__builtin__.str"}, "name": "genre", "key": 1031}     {"content": "44.95", "type": {"py/type": "__builtin__.str"}, "name": "price", "key": 1031}     {"content": "2000-10-01", "type": {"py/type": "__builtin__.str"}, "name": "publish_date", "key": 1031}     {"content": "an in-depth @ creating applications xml.", "type": {"py/type": "__builtin__.str"}, "name": "description", "key": 1031}

as in increasing number of documents 1000, 10000,100000, 1000000, 10000000 , on.. average query response time increases increment in number of documents , varies 0.2 sec 3.0 seconds. have created hash index on collection. question whether can reduces increment in no of documents.

on other hand, have created full text index on content component, same thing happen in full text search, , response time gets vary .05 sec 0.3 sec.

so tell me there way reduce time further..

please tell me can further reduce response time?

one can not utilize indices in first level of nested for statements. however, starting arangodb 2.8 can utilize array indices:

the values query data.pname[*].name , data.pname[*].type lets create indices them:

db.dsp.ensureindex({type:"hash", fields: ['data[*].type']}); db.dsp.ensureindex({type:"hash", fields: ['data[*].name']});

and lets re-formulate query can utilize index. start simple version experiment , use explain revalidate uses index:

db._explain('for k in dsp filter "modified_date" in k.data[*].name return k') query string:  k in dsp filter "modified_date" in k.data[*].name return k  execution plan:  id   nodetype        est.   comment   1   singletonnode      1   * root   6   indexnode          1     - k in dsp   /* hash index scan */   5   returnnode         1       - return k  indexes used:    type   collection   unique   sparse   selectivity   fields               ranges   6   hash   dsp          false    false       100.00 %   [ `data[*].name` ]                                                ("modified_date" in k.`data`[*].`name`)

so see can filter on array conditions documents want inspect inner loop:

for k in dsp filter "modified_date" in k.data[*].name || "string" in k.data[*].type   p in k.data filter p.name == "modified_date" || p.type == "string" return p

Comments

Post a Comment

Popular posts from this blog

javascript - jQuery: Add class depending on URL in the best way -

i have html progress meter: <div class="col-md-3" style="margin-left: -20px;"> <div class="progress-pos active" id="progess-1"> <div class="progress-pos-inner"> login </div> </div> </div> <div class="col-md-3 progress-pos-container"> <div class="progress-pos" id="progess-2"> <div class="progress-pos-inner"> scan items </div> </div> </div> <div class="col-md-3 progress-pos-container"> <div class="progress-pos" id="progess-3"> <div class="progress-pos-inner"> confirm address </div> </div> </div> <div class="col-md-3 progress-pos-container"> <div class="progress-pos" id="progess-4"> <div class="progress-pos-in...
Read more

caching - How to check if a url path exists in the service worker cache -

i need check if particular url path exists in service worker cache. example, suppose url is: /myserviceworker/service?a=110&b=70 this url exists in cache, there many of them different values of , b. now, suppose want refresh of these urls, how can that? i want know how access key values service worker cache. if know key, plan follows: var url = new url(key); if(url.pathname === "\/myserviceworker/service") refetch key but not sure how cache key , in format is. mean, string or url? cache api has match() method returns promise resolving in response object if match or undefined if no match exists. second parameter object can specify ignoresearch not take account url parameters. the ignoresearch option supported firefox ( chrome status here ). in other hand, retrieve cache entries, can use keys() method.
Read more

Redirect to a HTTPS version using .htaccess -

i need modify .htaccess file redirect urls https version without "www". http://example.com --> https://example.com http://www.example.com --> https://example.com https://www.example.com --> https://example.com this how .htaccess file looks like: rewriteengine on rewritecond %{request_filename} !-d rewritecond %{request_filename} !-f rewriterule ^(.*)$ redirect.php?id=$1&page=$2 [qsa,l] what modifications need make .htaccess in order forward https without "www"? it depends on doing current code. looks file called redirect trying display php page seo friendly url. think might confusing people. anyway, need , force https without www, need 1 more rule above. also second rule needs two capture groups in rewriterule test string because wanting 2 different values using $1 , $2 references. rewriteengine on #rediect www non www and/or http https --- combinations. rewritecond %{http_host} !^example\.com [nc,or] rewritecond %{https} !^...
Read more