{"id":21806385,"url":"https://github.com/svilborg/neo4j","last_synced_at":"2026-05-11T04:45:30.814Z","repository":{"id":233220621,"uuid":"735030784","full_name":"svilborg/neo4j","owner":"svilborg","description":"neo4j 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Playground**\n\n[Neo4j Documentation](https://neo4j.com/product/neo4j-graph-database/?ref=product/)\n\nNeo4j Graph Database is native graph database that is built to store and retrieve connected data.\n\n**Nodes** are the entities in the graph.\n\n- Nodes can be tagged with labels, representing their different roles in your domain (for example, Person).\n- Nodes can hold any number of key-value pairs, or properties (for example, name).\n- Node labels may also attach metadata (such as index or constraint information) to certain nodes.\n\n**Relationships** provide directed, named connections between two node entities (for example, Person LOVES Person).\n\n- **Relationships** always have a direction, a type, a start node, and an end node, and they can have properties, just\n  like\n  nodes.\n- **Nodes** can have any number or type of relationships without sacrificing performance.\n- Although **relationships** are always **directed**, they can be navigated efficiently in any direction.\n\n**Cypher QL**\n\nCypher, a declarative query language similar to SQL, but optimized for graphs.\nNow used by other databases like SAP HANA Graph and Redis graph via the openCypher project.\n\n***Running this playground code***\n\n```shell\n\ndocker-compose -f ./docker-compose.yml up -d\n\n./bash.sh # Bash to container\n```\n\n```shell\n\n# Import data\nroot@008cd5ac7715:/var/www/html# composer install\nroot@008cd5ac7715:/var/www/html# ./app/index.php --import\n\n```\n\n```shell\ndocker-compose -f ./docker-compose.yml up -d\n```\n\nThe Browser tool is available here `http://0.0.0.0:7474/browser/`\n\n***Schema***\n\n![schema](docs/schema.png \"Schema\")\n\n***Queries***\n\n```cyp\n\n# Groups in common between 2 users based on the comment thread they voted on\n\nMATCH (u1:User{userId: 366265})-[v1:VOTE_UP]-\u003e(t:Thread)-[i:IS_IN]-\u003e(g:Group),\n(u2:User{userId:1})-[v2:VOTE_UP]-\u003e(t:Thread)\n\nRETURN g\nLIMIT 100;\n\n```\n\n```cyp\n\n# All Threads/Groups user commented on\n\nMATCH (u:User{userId: 1})-[:POST]-\u003e(c:Comment)-[:IS_ON]-\u003e(t:Thread)-[:IS_IN]-\u003e(g:Group)\nRETURN u,c,t,g;\n\n```\n\n![user_1_graph](docs/user.graph.png \"Commented Threads by User:1\")\n\nRecommend a Thread based on common groups\n\n```cyp\n\nMATCH (t:Thread) WHERE t.threadId = 1255065\nMATCH (t)-[:IS_IN]-\u003e(g:Group)\u003c-[:IS_IN]-(rec:Thread)\n\nWITH t, rec, COUNT(*) AS groupScore\n\n\nRETURN rec.name AS recommendation, groupScore  AS score\nORDER BY score DESC LIMIT 100\n\n```\n\n```text\n\n╒══════════════════════════════════════════════════════════════════════╤═══════╕\n│\"recommendation\"                                                      │\"score\"│\n╞══════════════════════════════════════════════════════════════════════╪═══════╡\n│\"Bon d'achat de 5€ à valoir dans les centres commerciaux La Galerie - │2      │\n│jeu 100% gagnant (via l'application)\"                                 │       │\n├──────────────────────────────────────────────────────────────────────┼───────┤\n│\"Miroir de Poche en forme de biscuit (vendeur tiers)\"                 │2      │\n├──────────────────────────────────────────────────────────────────────┼───────┤\n│\"Sélection d'articles en soldes - Ex: Diffuseur de Parfum Reflets Arge│2      │\n│ntés\"                                                                 │       │\n├──────────────────────────────────────────────────────────────────────┼───────┤\n│\"Codes promos CDISCOUNT via l'application de 25€ pour 249€ d'achat et │2      │\n│10€ pour 99€ d'achat.\"                           \n\n.......\n\n```\n\nSimilar Threads (common groups) to the one User:1 votes up\n\n```cyp\n\nMATCH (u:User{userId: 1})-[v:VOTE_UP]-\u003e(t:Thread),\n      (t)-[:IS_IN]-\u003e(g:Group)\u003c-[:IS_IN]-(t2:Thread)\nWHERE NOT EXISTS( (u)-[:VOTE_UP]-\u003e(t2) )\n\nWITH t2, COLLECT(g.name) AS groups, COUNT(*) AS commonGroups\nRETURN t2.name, groups, commonGroups\nORDER BY commonGroups DESC LIMIT 10;\n\n```\n\n```text\n╒══════════════════════════════════════════════════════════════════════╤══════════════════════════════════════════════════════════════════════╤══════════════╕\n│\"t2.name\"                                                             │\"groups\"                                                              │\"commonGroups\"│\n╞══════════════════════════════════════════════════════════════════════╪══════════════════════════════════════════════════════════════════════╪══════════════╡\n│\"6€ offerts pour l'achat de 30€ de chèques-cadeaux\"                   │[\"Services\",\"Culture \u0026 divertissement\",\"Sports \u0026 plein air\",\"Mode \u0026 ac│19            │\n│                                                                      │cessoires\",\"Services\",\"Santé \u0026 Cosmétiques\",\"Mode \u0026 accessoires\",\"Imag│              │\n│                                                                      │e, son \u0026 vidéo\",\"Culture \u0026 divertissement\",\"Consoles \u0026 jeux vidéo\",\"Im│              │\n│                                                                      │age, son \u0026 vidéo\",\"Culture \u0026 divertissement\",\"Mode \u0026 accessoires\",\"Mod│              │\n│                                                                      │e \u0026 accessoires\",\"Mode \u0026 accessoires\",\"Services\",\"Sports \u0026 plein air\",│              │\n│                                                                      │\"Mode \u0026 accessoires\",\"Services\"]                                      │              │\n├──────────────────────────────────────────────────────────────────────┼──────────────────────────────────────────────────────────────────────┼──────────────┤\n│\"Recevez un code promotionnel de 5€ en rechargeant votre compte Amazon│[\"Services\",\"Culture \u0026 divertissement\",\"Sports \u0026 plein air\",\"Mode \u0026 ac│18            │\n│.fr de 60€\"                                                           │cessoires\",\"Services\",\"Mode \u0026 accessoires\",\"Image, son \u0026 vidéo\",\"Cultu│              │\n│                                                                      │re \u0026 divertissement\",\"Consoles \u0026 jeux vidéo\",\"Image, son \u0026 vidéo\",\"Cul│              │\n│                                                                      │ture \u0026 divertissement\",\"Mode \u0026 accessoires\",\"Mode \u0026 accessoires\",\"Mode│              │\n│                                                                      │ \u0026 accessoires\",\"Services\",\"Sports \u0026 plein air\",\"Mode \u0026 accessoires\",\"│              │\n│                                                                      │Services\"]                                                            │              │\n├──────────────────────────────────────────────────────────────────────┼──────────────────────────────────────────────────────────────────────┼──────────────┤\n│\"Bon d'achat de 5€ à valoir dans les centres commerciaux La Galerie - │[\"Services\",\"Culture \u0026 divertissement\",\"Mode \u0026 accessoires\",\"Services\"│14            │\n│jeu 100% gagnant (via l'application)\"                                 │,\"Santé \u0026 Cosmétiques\",\"Mode \u0026 accessoires\",\"Culture \u0026 divertissement\"│              │\n│                                                                      │,\"Culture \u0026 divertissement\",\"Mode \u0026 accessoires\",\"Mode \u0026 accessoires\",│              │\n│                                                                      │\"Mode \u0026 accessoires\",\"Services\",\"Mode \u0026 accessoires\",\"Services\"]      │              │\n├──────────────────────────────────────────────────────────────────────┼──────────────────────────────────────────────────────────────────────┼──────────────┤\n│\"Codes promos CDISCOUNT via l'application de 25€ pour 249€ d'achat et │[\"Culture \u0026 divertissement\",\"Mode \u0026 accessoires\",\"Santé \u0026 Cosmétiques\"│13            │\n│10€ pour 99€ d'achat.\"                                                │,\"Mode \u0026 accessoires\",\"Image, son \u0026 vidéo\",\"Culture \u0026 divertissement\",│              │\n│                                                                      │\"Consoles \u0026 jeux vidéo\",\"Image, son \u0026 vidéo\",\"Culture \u0026 divertissement│              │\n│                                                                      │\",\"Mode \u0026 accessoires\",\"Mode \u0026 accessoires\",\"Mode \u0026 accessoires\",\"Mode│              │\n│                                                                      │ \u0026 accessoires\"]                                                      │              │\n├──────────────────────────────────────────────────────────────────────┼──────────────────────────────────────────────────────────────────────┼──────────────┤\n│\"Sélection d'articles en soldes - Ex: Diffuseur de Parfum Reflets Arge│[\"Culture \u0026 divertissement\",\"Sports \u0026 plein air\",\"Mode \u0026 accessoires\",│12            │\n│ntés\"                                                                 │\"Santé \u0026 Cosmétiques\",\"Mode \u0026 accessoires\",\"Culture \u0026 divertissement\",│              │\n│                                                                      │\"Culture \u0026 divertissement\",\"Mode \u0026 accessoires\",\"Mode \u0026 accessoires\",\"│              │\n│                                                                      │Mode \u0026 accessoires\",\"Sports \u0026 plein air\",\"Mode \u0026 accessoires\"]        │              │\n├──────────────────────────────────────────────────────────────────────┼──────────────────────────────────────────────────────────────────────┼──────────────┤\n│\"Nettoyage à sec d'un costume 2 pièces (retiré et livré à domicile/bur│[\"Services\",\"Mode \u0026 accessoires\",\"Services\",\"Mode \u0026 accessoires\",\"Mode│10            │\n│eau en 48H)\"                                                          │ \u0026 accessoires\",\"Mode \u0026 accessoires\",\"Mode \u0026 accessoires\",\"Services\",\"│              │\n│                                                                      │Mode \u0026 accessoires\",\"Services\"]                                       │              │\n├──────────────────────────────────────────────────────────────────────┼──────────────────────────────────────────────────────────────────────┼──────────────┤\n│\"10% supplémentaires sur les soldes à partir de 3 articles achetés + L│[\"Services\",\"Mode \u0026 accessoires\",\"Services\",\"Mode \u0026 accessoires\",\"Mode│10            │\n│ivraison offerte dès 60€ d'achat (noukies.com)\"                       │ \u0026 accessoires\",\"Mode \u0026 accessoires\",\"Mode \u0026 accessoires\",\"Services\",\"│              │\n│                                                                      │Mode \u0026 accessoires\",\"Services\"]                                       │              │\n├──────────────────────────────────────────────────────────────────────┼──────────────────────────────────────────────────────────────────────┼──────────────┤\n│\"Bracelet connecté Samsung Gear Fit 2 Pro (Noir/Rouge, Taille L) + Éco│[\"Sports \u0026 plein air\",\"Mode \u0026 accessoires\",\"Mode \u0026 accessoires\",\"Image│10            │\n│uteurs Bluetooth JBL Inspire 500 (via ODR de 50€)\"                    │, son \u0026 vidéo\",\"Image, son \u0026 vidéo\",\"Mode \u0026 accessoires\",\"Mode \u0026 acces│              │\n│                                                                      │soires\",\"Mode \u0026 accessoires\",\"Sports \u0026 plein air\",\"Mode \u0026 accessoires\"│              │\n│                                                                      │]                                                                     │              │\n├──────────────────────────────────────────────────────────────────────┼──────────────────────────────────────────────────────────────────────┼──────────────┤\n│\"VIBOX PC Gamer - Venom GL780T-43 Package - 4.5GHz Intel Quad Core (2x│[\"Mode \u0026 accessoires\",\"Mode \u0026 accessoires\",\"Image, son \u0026 vidéo\",\"Conso│9             │\n│ Dual SLI Nvidia GeForce GTX 1080Ti 11 Go, 32 Go 3000MHz RAM, SSD 240 │les \u0026 jeux vidéo\",\"Image, son \u0026 vidéo\",\"Mode \u0026 accessoires\",\"Mode \u0026 ac│              │\n│Go, 4 To, 3x Triple Écran 24\" DELL, Casque Gamer, Razer Clavier, Razer│cessoires\",\"Mode \u0026 accessoires\",\"Mode \u0026 accessoires\"]                 │              │\n│ Souris, Windows 10)\"                                                 │                                                                      │              │\n├──────────────────────────────────────────────────────────────────────┼──────────────────────────────────────────────────────────────────────┼──────────────┤\n│\"Carte graphique\"                                                     │[\"High-Tech\",\"High-Tech\",\"High-Tech\",\"High-Tech\",\"High-Tech\",\"High-Tec│9             │\n│                                                                      │h\",\"High-Tech\",\"High-Tech\",\"High-Tech\"]                               │              │\n└──────────────────────────────────────────────────────────────────────┴──────────────────────────────────────────────────────────────────────┴──────────────┘\n....\n```\n\nWeakly Connected Components\n\nThe Weakly Connected Components (WCC) algorithm finds sets of connected nodes in directed and undirected graphs.\nTwo nodes are connected, if there exists a path between them.\n\n```cyp\n\nCALL gds.graph.project.cypher(\n'usersCommentsThreadsProjection',\n'MATCH (u:User) RETURN id(u) AS id',\n'MATCH (u1:User)-[c1:COMMENT]-\u003e(t:Thread)\u003c-[c2:COMMENT]-(u2:User) RETURN id(u1)  AS source, id(u2) as target'\n);\n\nCALL gds.wcc.write('usersCommentsThreadsProjection', {writeProperty: 'everythingComponentId'})\nYIELD nodePropertiesWritten, componentCount;\n\nMATCH (u:User)\nWITH u.everythingComponentId AS component, COUNT(*) AS number\nRETURN component, number\nORDER BY number DESC\nLIMIT 20;\n\nMATCH (u:User)-[r]-\u003e(n)\nWHERE u.everythingComponentId=708\nRETURN u,r,n\nLIMIT 20;\n\n```\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fsvilborg%2Fneo4j","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fsvilborg%2Fneo4j","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fsvilborg%2Fneo4j/lists"}