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MongoDB à l’échelle                                  7 novembre 2012                          Julien SIMON, VP Engineering...
Criteo    • Société française fondée en 2005    • N°1 mondial de l’affichage publicitaire à la      performance    • Plus ...
Quelques bannièresThursday, 8 November 12
Sous le capot        •   7 data centers               • Trafic quotidien        •   Architecture actif-actif        – 20G ...
High Performance Computing       Transférer, agréger, indexer, requêter 20 To additionnels chaque jour ?               ou ...
HPC @ Criteo   • Déploiement « express »     à la mi-2011 devant     la croissance brutale     de la volumétrie et     l’e...
Use Case MongoDB @ Criteo    • Stockage des catalogues client         – Catalogue = liste de produits : identifiant, descr...
Architecture MongoDB    •   1 collection pour tous les catalogues    •   6 shards répartis sur 2 data centers    •   72 se...
MongoDB, 18 mois plus tard    •   Stable    •   Facile à (ré)installer et à administrer    •   Parfait pour les petits dat...
Merci !                           www.criteo.com                           labs.criteo.com                                ...
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Morning with MongoDB Paris 2012 - Cas d'usages courant en entreprise. Présentations des Clients et des Integrateurs Partner

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Cas d'usages courant en entreprise. Présentations des Clients et des Integrateurs Partner (fr)
Criteo, Le Figaro, Fast Connect, OCTO, Xebia, Zenika, eNovance

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Morning with MongoDB Paris 2012 - Cas d'usages courant en entreprise. Présentations des Clients et des Integrateurs Partner

  1. 1. MongoDB à l’échelle 7 novembre 2012 Julien SIMON, VP Engineering <j.simon@criteo.com>Thursday, 8 November 12
  2. 2. Criteo • Société française fondée en 2005 • N°1 mondial de l’affichage publicitaire à la performance • Plus de 2500 clients dans 37 pays (97% rétention) • Partenariats avec Google, Microsoft, Yahoo, Facebook, Ebay, Orange, etc. (94% reach) • Chiffre d’affaires 2011: $200M • 700 collaborateurs dont 200 ingénieursThursday, 8 November 12
  3. 3. Quelques bannièresThursday, 8 November 12
  4. 4. Sous le capot • 7 data centers • Trafic quotidien • Architecture actif-actif – 20G requêtes HTTP • 2500 serveurs – 800M bannières uniques • CDN, cloud, virtualisation • Trafic pic (par seconde) • Disponibilité > 99.95% – 385K requêtes HTTP – 25K bannières 1 requête HTTP = 1 ligne de log 4 Copyright © 2010 Criteo. Confidential.Thursday, 8 November 12
  5. 5. High Performance Computing Transférer, agréger, indexer, requêter 20 To additionnels chaque jour ? ou « Comment j’ai appris à ne plus m’en faire et à aimer le HPC » • ddd Storm Kafka 5 5Thursday, 8 November 12
  6. 6. HPC @ Criteo • Déploiement « express » à la mi-2011 devant la croissance brutale de la volumétrie et l’enlisement des outils existants • PoC MongoDB en avril 2011, cluster Hadoop en juin 2011 • En un peu plus d’un an, remplacement de la totalité des traitements traditionnels (outils maison + SQL Server) • Utilisation à la fois en production (prédiction, recommandation, etc.) et pour la Business Intelligence (reporting, analyse de trafic) 6Thursday, 8 November 12
  7. 7. Use Case MongoDB @ Criteo • Stockage des catalogues client – Catalogue = liste de produits : identifiant, description, catégorie, prix, URL image, etc. – 3000 catalogues, de quelques Mo à plusieurs dizaines de Go – 500M produits (1 produit = 1 Ko en base) – Import toutes les 24h (parfois plus souvent: ventes flash, promos) – Environ 50% des produits modifiés chaque jour • Bases accédées par les serveurs web livrant les bannières • Export vers le cluster Hadoop toutes les 4 heures • Besoin de requêter (système clé-valeur pas suffisant) • Haute disponibilité et réplication inter-data center • Architecture « scale-out » (comme le reste de la plate-forme) • Impasse avec SQL Server : taille des bases, nombre de bases, réplication transactionnelle sur des liens à forte latence (US) 7Thursday, 8 November 12
  8. 8. Architecture MongoDB • 1 collection pour tous les catalogues • 6 shards répartis sur 2 data centers • 72 serveurs au total • D’abord sur 2.0 (+ patchs Criteo), puis sur 2.2. 8Thursday, 8 November 12
  9. 9. MongoDB, 18 mois plus tard • Stable • Facile à (ré)installer et à administrer • Parfait pour les petits datasets (plus petits que la RAM) • Bonnes performances si le ratio lecture/écriture est élevé • Failover automatique et réplication inter-DC OK • Forte dégradation des performances si : – Working set plus gros que la RAM – Ratio lecture/écriture faible – Coexistence d’applications sur le même cluster • Quelques améliorations sur 2.2, mais la scalabilité en écriture reste trop limitée (à notre échelle) pour envisager d’autres cas d’usage • Criteo suivra évidemment avec intérêt la roadmap de 10gen  9Thursday, 8 November 12
  10. 10. Merci ! www.criteo.com labs.criteo.com 10Thursday, 8 November 12

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