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Elasticsearch - c'est plus que ça en a l'air

Elasticsearch - c'est plus que ça en a l'air

Présentation de cas d'utilisation d'Elasticsearch, hors recherche "full-text", lors de Pytong 2 à Marseille — http://pytong.org.

Jérémy Lecour

September 20, 2014
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  1. Elasticsearch
    c'est encore plus que ça en a l'air

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  2. Base de données :
    distribuée
    orientée document
    avec ou sans schema
    non-relationnelle
    Multi-couches :
    Lucene
    système de distribution
    API de requête
    interface REST en JSON
    elasticsearch

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  3. {
    "indices.create": {
    "documentation": "http://www.elasticsearch.org/guide/reference/api/admin-indices-create-index/",
    "methods": ["PUT", "POST"],
    "url": {
    "path": "/{index}",
    "paths": ["/{index}"],
    "parts": {
    "index": {
    "type" : "string",
    "required" : true,
    "description" : "The name of the index"
    }
    },
    "params": {
    "timeout": {
    "type" : "time",
    "description" : "Explicit operation timeout"
    }
    }
    },
    "body": {
    "description" : "The configuration for the index (`settings` and `mappings`)"
    }
    }
    }
    elasticsearch/elasticsearch/rest-api-spec

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  4. elasticsearch/elasticsearch-py
    Caractéristiques :
    transposition des types natifs Python de/vers JSON
    connexions persistentes
    load-balancing
    thread-safety
    architecture extensible
    gestion configurable du cluster

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  5. Recherche "full-text"
    indexation et recherche
    correction orthographique
    mise en évidence des résultats
    analyse/tokenisation avancées
    elasticsearch
    1. indexation d'enregistrement ou document externe
    2. recherche dans Elasticsearch
    3. récupération de l'original à son emplacement
    … mais encore ?

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  6. Jérémy Lecour
    hotelhotel.com

    View full-size slide

  7. Fouille de données
    Quand :
    • awk, grep, cut, … sont inadaptés
    • Excel est une mouette malade
    • R est trop scientifique
    • on ne sait pas quoi chercher
    • on ne sait pas comment le chercher

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  8. 90.31.45.64 - - [14/Sep/2014:00:59:58 +0200] "GET /goto?cid=hotelhotel&display_zone=hotel.best_price&result_amount=29.9&result_currency=EUR&result_status=available&url=http%3A%2F%2Fapi.example.com%2Fredirect%3Fcheckin_date%3D2014-09-27%26client%3Dhotelhotel%26currency%3DEUR%26hotel
    %3D5853%26language%3DFR%26nights%3D1%26partner%3Dbooking%26people%3D2%26room_code%3D7968901_82039220_0_2 HTTP/1.1" 200 2904 "http://example.com/details?hotel_id=5853" "Mozilla/5.0 (Windows NT 6.1; rv:31.0) Gecko/20100101 Firefox/31.0"
    54.247.188.179 - - [14/Sep/2014:00:59:58 +0200] "HEAD / HTTP/1.0" 200 616 "-" "NewRelicPinger/1.0 (6536)"
    66.249.69.19 - - [14/Sep/2014:00:59:56 +0200] "GET /toulouse/hotel-toulouse-blagnac-az.html HTTP/1.1" 200 19935 "-" "DoCoMo/2.0 N905i(c100;TB;W24H16) (compatible; Googlebot-Mobile/2.1; +http://www.google.com/bot.html)"
    105.235.128.128 - - [14/Sep/2014:00:59:59 +0200] "GET /details?hotel_id=722506 HTTP/1.1" 200 13874 "-" "Mozilla/5.0 (Linux; U; Android 4.0.4; fr-fr; Q7A+ Build/IMM76I) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30"
    66.249.69.35 - - [14/Sep/2014:01:00:01 +0200] "GET /torres-23/ HTTP/1.1" 500 664 "-" "Mozilla/5.0 (iPhone; CPU iPhone OS 6_0 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Version/6.0 Mobile/10A5376e Safari/8536.25 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)"
    31.170.8.141 - - [14/Sep/2014:01:00:01 +0200] "GET /server-status-64942?auto HTTP/1.1" 200 574 "-" "munin/2.0.6-4+deb7u2 (libwww-perl/6.04)"
    31.170.8.141 - - [14/Sep/2014:01:00:04 +0200] "GET /server-status-64942?auto HTTP/1.1" 200 579 "-" "munin/2.0.6-4+deb7u2 (libwww-perl/6.04)"
    24.58.100.150 - - [14/Sep/2014:01:00:07 +0200] "GET /bellano/?sort=distance HTTP/1.1" 200 22269 "-" "Mozilla/5.0 (compatible; AhrefsBot/5.0; +http://ahrefs.com/robot/)"
    24.58.100.67 - - [14/Sep/2014:01:00:08 +0200] "GET /serang/ HTTP/1.1" 200 20749 "-" "Mozilla/5.0 (compatible; AhrefsBot/5.0; +http://ahrefs.com/robot/)"
    66.249.69.9 - - [14/Sep/2014:01:00:09 +0200] "GET /nantes/ HTTP/1.1" 200 29757 "-" "Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)"
    88.167.200.78 - - [14/Sep/2014:01:00:09 +0200] "GET /details?id=316191 HTTP/1.1" 200 18284 "-" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Firefox/31.0"
    193.201.45.74 - - [14/Sep/2014:01:00:10 +0200] "GET /redon/ HTTP/1.0" 200 104889 "http://example.com/redon/" "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/524.36 (KHTML, like Gecko) Chrome/30.0.1599.12785 YaBrowser/13.12.1599.12785 Safari/524.36"
    31.170.8.141 - - [14/Sep/2014:01:00:14 +0200] "GET /server-status-64942?auto HTTP/1.1" 200 584 "-" "munin/2.0.6-4+deb7u2 (libwww-perl/6.04)"
    88.167.200.78 - - [14/Sep/2014:01:00:14 +0200] "GET /hotels/316191/photos HTTP/1.1" 200 1682 "http://example.com/details?id=316191" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Firefox/31.0"
    88.167.200.78 - - [14/Sep/2014:01:00:14 +0200] "GET /hotels/316191/descriptions.js HTTP/1.1" 200 1981 "http://example.com/details?id=316191" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Firefox/31.0"
    66.249.69.19 - - [14/Sep/2014:01:00:14 +0200] "GET /kamnik/ HTTP/1.1" 200 20761 "-" "Mozilla/5.0 (iPhone; CPU iPhone OS 6_0 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Version/6.0 Mobile/10A5376e Safari/8536.25 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)"
    88.167.200.78 - - [14/Sep/2014:01:00:14 +0200] "GET /users/activities.js HTTP/1.1" 200 1678 "http://example.com/details?id=316191" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Firefox/31.0"
    65.54.247.240 - - [14/Sep/2014:01:00:14 +0200] "GET /comparateur-prix-hotel?page=3&search_id=a0dfea0d7714-20140705 HTTP/1.1" 200 15160 "-" "Mozilla/5.0 (iPhone; CPU iPhone OS 7_0 like Mac OS X; en-us) AppleWebKit/534+ (KHTML, like Gecko) Version/7.0 Mobile/11A465 Safari/9524.53 MsnBot-
    Media /1.0b"
    88.167.200.78 - - [14/Sep/2014:01:00:14 +0200] "GET /hotels/316191/availabilities.js?utf8=%E2%9C%93&reserver%5Bhotel_id%5D=316191&reserver%5Bcheckin_date%5D=27%2F09%2F2014&reserver%5Bnights%5D=1&reserver%5Bpeople%5D=2 HTTP/1.1" 200 4848 "http://example.com/details?id=316191" "Mozilla/5.0
    (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Firefox/31.0"
    65.54.247.240 - - [14/Sep/2014:01:00:17 +0200] "GET /users/activities.js HTTP/1.1" 204 625 "http://example.com/comparateur-prix-hotel?page=3&search_id=a0dfea0d7714-20140705" "Mozilla/5.0 (iPhone; CPU iPhone OS 7_0 like Mac OS X; en-us) AppleWebKit/534+ (KHTML, like Gecko) Version/7.0
    Mobile/11A465 Safari/9524.53 MsnBot-Media /1.0b"
    66.249.93.51 - - [14/Sep/2014:01:00:17 +0200] "GET /charleville-mezieres.kml HTTP/1.1" 200 5423 "-" "Kml-Google; (+http://code.google.com/apis/kml), gzip"
    65.54.247.240 - - [14/Sep/2014:01:00:18 +0200] "GET /users/autologin.js HTTP/1.1" 200 892 "http://example.com/comparateur-prix-hotel?page=3&search_id=a0dfea0d7714-20140705" "Mozilla/5.0 (iPhone; CPU iPhone OS 7_0 like Mac OS X; en-us) AppleWebKit/534+ (KHTML, like Gecko) Version/7.0
    Mobile/11A465 Safari/9524.53 MsnBot-Media /1.0b"
    90.31.45.64 - - [14/Sep/2014:01:00:19 +0200] "GET /users/autologin.js HTTP/1.1" 304 337 "http://example.com/lourdes/hotel-lourdes-pas-cher-az.html" "Mozilla/5.0 (Windows NT 6.1; rv:31.0) Gecko/20100101 Firefox/31.0"
    66.249.69.9 - - [14/Sep/2014:01:00:19 +0200] "GET /coruche/ HTTP/1.1" 200 20561 "-" "Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)"
    66.249.84.115 - - [14/Sep/2014:01:00:18 +0200] "GET /comparateur-prix-hotel.kml?search%5Bsearchable_term%5D=&search%5Bsearchable_type%5D= HTTP/1.1" 200 619741 "-" "Kml-Google; (+http://code.google.com/apis/kml), gzip"
    88.167.200.78 - - [14/Sep/2014:01:00:23 +0200] "GET /favicon.ico HTTP/1.1" 200 1790 "-" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Firefox/31.0"
    88.167.200.78 - - [14/Sep/2014:01:00:26 +0200] "GET /users/autologin.js HTTP/1.1" 200 950 "http://example.com/details?id=316191" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Firefox/31.0"
    69.171.45.115 - - [14/Sep/2014:01:00:26 +0200] "GET /details?hotel_id=316191 HTTP/1.1" 206 18309 "-" "facebookexternalhit/1.1 (+http://www.facebook.com/externalhit_uatext.php)"
    69.171.45.118 - - [14/Sep/2014:01:00:27 +0200] "GET /details?hotel_id=316191&fb_locale=fr_FR HTTP/1.1" 206 18309 "-" "facebookexternalhit/1.1 (+http://www.facebook.com/externalhit_uatext.php)"
    66.249.69.35 - - [14/Sep/2014:01:00:28 +0200] "GET /zory/ HTTP/1.1" 200 20130 "-" "Mozilla/5.0 (iPhone; CPU iPhone OS 6_0 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Version/6.0 Mobile/10A5376e Safari/8536.25 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)"
    92.221.141.12 - - [14/Sep/2014:01:00:28 +0200] "GET /hotels/265596/availabilities.js?utf8=%E2%9C%93&reserver%5Bhotel_id%5D=265596&reserver%5Bcheckin_date%5D=14%2F09%2F2014&reserver%5Bnights%5D=4&reserver%5Bpeople%5D=1 HTTP/1.1" 200 2805 "http://example.com/details?hotel_id=265596"
    "Mozilla/5.0 (Windows NT 6.2; WOW64; rv:32.0) Gecko/20100101 Firefox/32.0"
    66.249.69.35 - - [14/Sep/2014:01:00:33 +0200] "GET /la-crau/ HTTP/1.1" 200 20038 "-" "Mozilla/5.0 (iPhone; CPU iPhone OS 6_0 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Version/6.0 Mobile/10A5376e Safari/8536.25 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)"
    86.202.70.135 - - [14/Sep/2014:01:00:33 +0200] "GET /users/autologin.js HTTP/1.1" 304 337 "http://example.com/clermont-ferrand/hotel-Clermont-ferrand-pas-cher-az.html" "Mozilla/5.0 (Linux; Android 4.4.2; D2303 Build/18.3.C.0.37) AppleWebKit/524.36 (KHTML, like Gecko) Chrome/24.0.2062.117
    Mobile Safari/524.36"
    93.0.232.94 - - [14/Sep/2014:01:00:34 +0200] "GET / HTTP/1.1" 200 84935 "-" "Echoping/6.0.2"
    157.55.39.234 - - [14/Sep/2014:01:00:34 +0200] "GET /melbourne-fl/ HTTP/1.1" 200 22876 "-" "Mozilla/5.0 (compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm)"
    93.0.232.94 - - [14/Sep/2014:01:00:36 +0200] "GET / HTTP/1.1" 200 84934 "-" "Echoping/6.0.2"
    81.251.101.164 - - [14/Sep/2014:01:00:39 +0200] "GET /disneyland-paris/hotel-disneyland-paris-pas-cher-az.html HTTP/1.1" 200 98790 "http://www.google.fr/imgres?imgurl=http%3A%2F%2Fs3.example.com%2Fmedias%2F000%2F000%2F521%2Fdisney_pas_cher-big.jpg%253F1352727975&imgrefurl=http%3A%2F
    %2Fexample.com%2Fdisneyland-paris%2Fhotel-disneyland-paris-pas-cher-az.html&h=250&w=630&tbnid=qF3Y0wPeyeW7tM%3A&zoom=1&docid=RGXzA6TWMY8jPM&ei=jMwUVPvCD86UatGdgiA&tbm=isch&iact=rc&uact=3&dur=2234&page=1&start=0&ndsp=12&ved=0CD0QrQMwCQ" "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/
    524.36 (KHTML, like Gecko) Chrome/24.0.2062.120 Safari/524.36"
    81.251.101.164 - - [14/Sep/2014:01:00:41 +0200] "GET /disneyland-paris/hotel-disneyland-paris-pas-cher-az.html HTTP/1.1" 200 98680 "http://www.google.fr/imgres?imgurl=http%3A%2F%2Fs3.example.com%2Fmedias%2F000%2F000%2F521%2Fdisney_pas_cher-big.jpg%253F1352727975&imgrefurl=http%3A%2F
    %2Fexample.com%2Fdisneyland-paris%2Fhotel-disneyland-paris-pas-cher-az.html&h=250&w=630&tbnid=qF3Y0wPeyeW7tM%3A&zoom=1&docid=RGXzA6TWMY8jPM&ei=jMwUVPvCD86UatGdgiA&tbm=isch&iact=rc&uact=3&dur=2234&page=1&start=0&ndsp=12&ved=0CD0QrQMwCQ" "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/
    524.36 (KHTML, like Gecko) Chrome/24.0.2062.120 Safari/524.36"
    81.251.101.164 - - [14/Sep/2014:01:00:41 +0200] "GET /date_images/1401451200-normal-10.png HTTP/1.1" 200 1349 "http://example.com/disneyland-paris/hotel-disneyland-paris-pas-cher-az.html" "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/524.36 (KHTML, like Gecko) Chrome/24.0.2062.120
    Safari/524.36"
    66.249.69.9 - - [14/Sep/2014:01:00:42 +0200] "GET /sevenoaks/ HTTP/1.1" 200 23205 "-" "Mozilla/5.0 (iPhone; CPU iPhone OS 6_0 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Version/6.0 Mobile/10A5376e Safari/8536.25 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)"
    81.251.101.164 - - [14/Sep/2014:01:00:43 +0200] "GET /users/activities.js HTTP/1.1" 200 1537 "http://example.com/disneyland-paris/hotel-disneyland-paris-pas-cher-az.html" "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/524.36 (KHTML, like Gecko) Chrome/24.0.2062.120 Safari/524.36"
    90.31.45.64 - - [14/Sep/2014:01:00:44 +0200] "GET /details?hotel_id=334620 HTTP/1.1" 200 19392 "http://example.com/lourdes/hotel-lourdes-pas-cher-az.html" "Mozilla/5.0 (Windows NT 6.1; rv:31.0) Gecko/20100101 Firefox/31.0"
    41.111.59.99 - - [14/Sep/2014:01:00:45 +0200] "GET /marrakech/hotel-marrakech-pas-cher-az.html HTTP/1.1" 200 22218 "http://www.google.dz/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0CDoQFjAA&url=http%3A%2F%2Fexample.com%2Fmarrakech%2Fhotel-marrakech-pas-cher-
    az.html&ei=k8wUVNugDayO7QaP44HwBQ&usg=AFQjCNH5uZDUHAHCcLJEcsNaaWzuidFuwA&bvm=bv.75097201,d.ZGU" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:32.0) Gecko/20100101 Firefox/32.0"
    90.31.45.64 - - [14/Sep/2014:01:00:46 +0200] "GET /hotels/334620/descriptions.js HTTP/1.1" 200 1477 "http://example.com/details?hotel_id=334620" "Mozilla/5.0 (Windows NT 6.1; rv:31.0) Gecko/20100101 Firefox/31.0"
    90.31.45.64 - - [14/Sep/2014:01:00:46 +0200] "GET /hotels/334620/photos HTTP/1.1" 200 1353 "http://example.com/details?hotel_id=334620" "Mozilla/5.0 (Windows NT 6.1; rv:31.0) Gecko/20100101 Firefox/31.0"
    90.31.45.64 - - [14/Sep/2014:01:00:46 +0200] "GET /users/activities.js HTTP/1.1" 200 1916 "http://example.com/details?hotel_id=334620" "Mozilla/5.0 (Windows NT 6.1; rv:31.0) Gecko/20100101 Firefox/31.0"
    90.31.45.64 - - [14/Sep/2014:01:00:46 +0200] "GET /hotels/334620/availabilities.js?utf8=%E2%9C%93&reserver%5Bhotel_id%5D=334620&reserver%5Bcheckin_date%5D=27%2F09%2F2014&reserver%5Bnights%5D=1&reserver%5Bpeople%5D=2 HTTP/1.1" 200 2796 "http://example.com/details?hotel_id=334620" "Mozilla/
    5.0 (Windows NT 6.1; rv:31.0) Gecko/20100101 Firefox/31.0"
    90.31.45.64 - - [14/Sep/2014:01:00:49 +0200] "GET /users/autologin.js HTTP/1.1" 304 336 "http://example.com/details?hotel_id=334620" "Mozilla/5.0 (Windows NT 6.1; rv:31.0) Gecko/20100101 Firefox/31.0"
    66.249.84.115 - - [14/Sep/2014:01:00:49 +0200] "GET /comparateur-prix-hotel.kml?search%5Bdestination_id%5D=34085 HTTP/1.1" 200 11090 "-" "Kml-Google; (+http://code.google.com/apis/kml), gzip"
    41.111.59.99 - - [14/Sep/2014:01:00:50 +0200] "GET /date_images/1337673600-normal-10.png HTTP/1.1" 200 1011 "http://example.com/marrakech/hotel-marrakech-pas-cher-az.html" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:32.0) Gecko/20100101 Firefox/32.0"
    66.220.158.112 - - [14/Sep/2014:01:00:50 +0200] "GET /details?hotel_id=334620 HTTP/1.1" 206 19520 "-" "facebookexternalhit/1.1 (+http://www.facebook.com/externalhit_uatext.php)"
    41.111.59.99 - - [14/Sep/2014:01:00:50 +0200] "GET /users/activities.js HTTP/1.1" 200 1667 "http://example.com/marrakech/hotel-marrakech-pas-cher-az.html" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:32.0) Gecko/20100101 Firefox/32.0"
    66.220.158.112 - - [14/Sep/2014:01:00:50 +0200] "GET /details?hotel_id=334620&fb_locale=fr_FR HTTP/1.1" 206 19519 "-" "facebookexternalhit/1.1 (+http://www.facebook.com/externalhit_uatext.php)"
    41.111.59.99 - - [14/Sep/2014:01:00:57 +0200] "GET /favicon.ico HTTP/1.1" 200 1790 "-" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:32.0) Gecko/20100101 Firefox/32.0"
    66.249.69.9 - - [14/Sep/2014:01:00:57 +0200] "GET /hathersage/ HTTP/1.1" 200 21014 "-" "Mozilla/5.0 (iPhone; CPU iPhone OS 6_0 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Version/6.0 Mobile/10A5376e Safari/8536.25 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)"
    41.111.59.99 - - [14/Sep/2014:01:00:57 +0200] "GET /users/autologin.js HTTP/1.1" 200 950 "http://example.com/marrakech/hotel-marrakech-pas-cher-az.html" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:32.0) Gecko/20100101 Firefox/32.0"
    des logs de serveur web

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  9. {
    "hits" : { "total" : 7319546, "hits" : [ ] },
    "facets" : {
    "0" : {
    "_type" : "date_histogram",
    "entries" : [
    { "time" : 1410807480000, "count" : 353},
    { "time" : 1410807510000, "count" : 5385},
    { "time" : 1410807540000, "count" : 2113},
    { "time" : 1410807570000, "count" : 734},
    { "time" : 1410807600000, "count" : 157},
    { "time" : 1410807630000, "count" : 52},
    { "time" : 1410807660000, "count" : 267},
    { "time" : 1410807690000, "count" : 50},
    { "time" : 1410807720000, "count" : 107},
    { "time" : 1410807750000, "count" : 3055},
    { "time" : 1410807780000, "count" : 2668},
    { "time" : 1410807810000, "count" : 2197},
    { "time" : 1410807840000, "count" : 1110}
    ]
    }
    }
    }
    facettes et agrégations

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  10. visualisation et exploration

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  11. 1. injecter les données dans Elasticsearch (sans trop de design)
    2. brancher Kibana et un histogramme simple
    3. observer les tendances et affiner les graphs
    4. re-indexer les données avec un schéma plus précis
    5. rincer
    6. recommencer
    dans la pratique

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  12. Indexation éphémère
    et recherche en flux tendu
    1. index commun : données génériques
    2. copie pour une recherche spécifique
    3. ajout des données de dispo/prix
    4. beaucoup de données créées en peu de temps
    5. disponibilité immédiate (< 1 sec)
    6. recherche intensive pendant quelques minutes
    7. données quasi inutiles 24h plus tard

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  13. indices datés et temporaires

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  14. Conclusion
    des outils très performants et économes en resources
    beaucoup de fonctionnalités mais pas de lourdeur
    robustesse et facilité de prise en main
    grande ouverture technique et d'esprit

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  15. /me <3 elasticsearch
    ☝️ ❤️

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  16. Merci
    j'adore les questions

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  17. [email protected]
    @jlecour
    jeremy.wordpress.com
    github.com/jlecour

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