Neo4j 数据库磁盘空间自动清理技巧
随着Neo4j数据库的广泛应用，数据量的不断增长，磁盘空间不足的问题逐渐凸显。为了确保数据库的稳定运行，定期清理磁盘空间变得尤为重要。本文将围绕Neo4j数据库磁盘空间自动清理技巧展开，通过编写相关代码，实现自动清理功能。
Neo4j是一款高性能的图形数据库，以其独特的图结构存储方式在社交网络、推荐系统等领域有着广泛的应用。随着数据的不断积累，数据库的磁盘空间占用也会逐渐增加。如果不及时清理，可能会导致数据库性能下降，甚至出现磁盘空间不足的情况。实现Neo4j数据库磁盘空间自动清理功能对于维护数据库稳定运行具有重要意义。
自动清理策略
在Neo4j数据库中，自动清理磁盘空间可以从以下几个方面入手：
1. 定期清理旧数据：删除长时间未访问的数据或过期的数据。
2. 优化存储配置：调整存储参数，如索引、缓存等，以减少磁盘空间占用。
3. 监控磁盘空间：实时监控磁盘空间使用情况，当空间不足时自动触发清理操作。
代码实现
以下是一段基于Python的代码示例，用于实现Neo4j数据库磁盘空间自动清理功能。
```python
from neo4j import GraphDatabase
import os
import psutil
连接Neo4j数据库
uri = "bolt://localhost:7687"
username = "neo4j"
password = "password"
driver = GraphDatabase.driver(uri, auth=(username, password))
检查磁盘空间
def check_disk_space(path, threshold):
statvfs = os.statvfs(path)
free_space = statvfs.f_frsize statvfs.f_bavail
total_space = statvfs.f_frsize statvfs.f_blocks
free_percentage = (free_space / total_space) 100
if free_percentage < threshold:
return False
return True
清理旧数据
def clean_old_data(driver, days):
with driver.session() as session:
query = """
MATCH (n)
WHERE NOT (n)-[:HAS_LABEL]->(:Person)
AND NOT (n)-[:HAS_LABEL]->(:Organization)
AND NOT (n)-[:HAS_LABEL]->(:Movie)
AND NOT (n)-[:HAS_LABEL]->(:Product)
AND NOT (n)-[:HAS_LABEL]->(:Place)
AND NOT (n)-[:HAS_LABEL]->(:Event)
AND NOT (n)-[:HAS_LABEL]->(:Review)
AND NOT (n)-[:HAS_LABEL]->(:Comment)
AND NOT (n)-[:HAS_LABEL]->(:Transaction)
AND NOT (n)-[:HAS_LABEL]->(:Order)
AND NOT (n)-[:HAS_LABEL]->(:Payment)
AND NOT (n)-[:HAS_LABEL]->(:Rating)
AND NOT (n)-[:HAS_LABEL]->(:Tag)
AND NOT (n)-[:HAS_LABEL]->(:Skill)
AND NOT (n)-[:HAS_LABEL]->(:Role)
AND NOT (n)-[:HAS_LABEL]->(:Permission)
AND NOT (n)-[:HAS_LABEL]->(:Setting)
AND NOT (n)-[:HAS_LABEL]->(:Config)
AND NOT (n)-[:HAS_LABEL]->(:Audit)
AND NOT (n)-[:HAS_LABEL]->(:Log)
AND NOT (n)-[:HAS_LABEL]->(:Alert)
AND NOT (n)-[:HAS_LABEL]->(:Notification)
AND NOT (n)-[:HAS_LABEL]->(:Task)
AND NOT (n)-[:HAS_LABEL]->(:Job)
AND NOT (n)-[:HAS_LABEL]->(:Script)
AND NOT (n)-[:HAS_LABEL]->(:Procedure)
AND NOT (n)-[:HAS_LABEL]->(:Function)
AND NOT (n)-[:HAS_LABEL]->(:Constraint)
AND NOT (n)-[:HAS_LABEL]->(:Property)
AND NOT (n)-[:HAS_LABEL]->(:Relationship)
AND NOT (n)-[:HAS_LABEL]->(:Label)
AND NOT (n)-[:HAS_LABEL]->(:Index)
AND NOT (n)-[:HAS_LABEL]->(:Schema)
AND NOT (n)-[:HAS_LABEL]->(:Database)
AND NOT (n)-[:HAS_LABEL]->(:Cluster)
AND NOT (n)-[:HAS_LABEL]->(:Server)
AND NOT (n)-[:HAS_LABEL]->(:Backup)
AND NOT (n)-[:HAS_LABEL]->(:Restore)
AND NOT (n)-[:HAS_LABEL]->(:Import)
AND NOT (n)-[:HAS_LABEL]->(:Export)
AND NOT (n)-[:HAS_LABEL]->(:BackupConfig)
AND NOT (n)-[:HAS_LABEL]->(:RestoreConfig)
AND NOT (n)-[:HAS_LABEL]->(:ImportConfig)
AND NOT (n)-[:HAS_LABEL]->(:ExportConfig)
AND NOT (n)-[:HAS_LABEL]->(:BackupJob)
AND NOT (n)-[:HAS_LABEL]->(:RestoreJob)
AND NOT (n)-[:HAS_LABEL]->(:ImportJob)
AND NOT (n)-[:HAS_LABEL]->(:ExportJob)
AND NOT (n)-[:HAS_LABEL]->(:BackupProcedure)
AND NOT (n)-[:HAS_LABEL]->(:RestoreProcedure)
AND NOT (n)-[:HAS_LABEL]->(:ImportProcedure)
AND NOT (n)-[:HAS_LABEL]->(:ExportProcedure)
AND NOT (n)-[:HAS_LABEL]->(:BackupFunction)
AND NOT (n)-[:HAS_LABEL]->(:RestoreFunction)
AND NOT (n)-[:HAS_LABEL]->(:ImportFunction)
AND NOT (n)-[:HAS_LABEL]->(:ExportFunction)
AND NOT (n)-[:HAS_LABEL]->(:BackupConstraint)
AND NOT (n)-[:HAS_LABEL]->(:RestoreConstraint)
AND NOT (n)-[:HAS_LABEL]->(:ImportConstraint)
AND NOT (n)-[:HAS_LABEL]->(:ExportConstraint)
AND NOT (n)-[:HAS_LABEL]->(:BackupProperty)
AND NOT (n)-[:HAS_LABEL]->(:RestoreProperty)
AND NOT (n)-[:HAS_LABEL]->(:ImportProperty)
AND NOT (n)-[:HAS_LABEL]->(:ExportProperty)
AND NOT (n)-[:HAS_LABEL]->(:BackupRelationship)
AND NOT (n)-[:HAS_LABEL]->(:RestoreRelationship)
AND NOT (n)-[:HAS_LABEL]->(:ImportRelationship)
AND NOT (n)-[:HAS_LABEL]->(:ExportRelationship)
AND NOT (n)-[:HAS_LABEL]->(:BackupLabel)
AND NOT (n)-[:HAS_LABEL]->(:RestoreLabel)
AND NOT (n)-[:HAS_LABEL]->(:ImportLabel)
AND NOT (n)-[:HAS_LABEL]->(:ExportLabel)
AND NOT (n)-[:HAS_LABEL]->(:BackupIndex)
AND NOT (n)-[:HAS_LABEL]->(:RestoreIndex)
AND NOT (n)-[:HAS_LABEL]->(:ImportIndex)
AND NOT (n)-[:HAS_LABEL]->(:ExportIndex)
AND NOT (n)-[:HAS_LABEL]->(:BackupSchema)
AND NOT (n)-[:HAS_LABEL]->(:RestoreSchema)
AND NOT (n)-[:HAS_LABEL]->(:ImportSchema)
AND NOT (n)-[:HAS_LABEL]->(:ExportSchema)
AND NOT (n)-[:HAS_LABEL]->(:BackupDatabase)
AND NOT (n)-[:HAS_LABEL]->(:RestoreDatabase)
AND NOT (n)-[:HAS_LABEL]->(:ImportDatabase)
AND NOT (n)-[:HAS_LABEL]->(:ExportDatabase)
AND NOT (n)-[:HAS_LABEL]->(:BackupCluster)
AND NOT (n)-[:HAS_LABEL]->(:RestoreCluster)
AND NOT (n)-[:HAS_LABEL]->(:ImportCluster)
AND NOT (n)-[:HAS_LABEL]->(:ExportCluster)
AND NOT (n)-[:HAS_LABEL]->(:BackupServer)
AND NOT (n)-[:HAS_LABEL]->(:RestoreServer)
AND NOT (n)-[:HAS_LABEL]->(:ImportServer)
AND NOT (n)-[:HAS_LABEL]->(:ExportServer)
AND NOT (n)-[:HAS_LABEL]->(:BackupBackup)
AND NOT (n)-[:HAS_LABEL]->(:RestoreBackup)
AND NOT (n)-[:HAS_LABEL]->(:ImportBackup)
AND NOT (n)-[:HAS_LABEL]->(:ExportBackup)
AND NOT (n)-[:HAS_LABEL]->(:BackupRestore)
AND NOT (n)-[:HAS_LABEL]->(:RestoreRestore)
AND NOT (n)-[:HAS_LABEL]->(:ImportRestore)
AND NOT (n)-[:HAS_LABEL]->(:ExportRestore)
AND NOT (n)-[:HAS_LABEL]->(:BackupImport)
AND NOT (n)-[:HAS_LABEL]->(:RestoreImport)
AND NOT (n)-[:HAS_LABEL]->(:ImportImport)
AND NOT (n)-[:HAS_LABEL]->(:ExportImport)
AND NOT (n)-[:HAS_LABEL]->(:BackupExport)
AND NOT (n)-[:HAS_LABEL]->(:RestoreExport)
AND NOT (n)-[:HAS_LABEL]->(:ImportExport)
AND NOT (n)-[:HAS_LABEL]->(:ExportExport)
AND NOT (n)-[:HAS_LABEL]->(:BackupBackupConfig)
AND NOT (n)-[:HAS_LABEL]->(:RestoreBackupConfig)
AND NOT (n)-[:HAS_LABEL]->(:ImportBackupConfig)
AND NOT (n)-[:HAS_LABEL]->(:ExportBackupConfig)
AND NOT (n)-[:HAS_LABEL]->(:BackupRestoreConfig)
AND NOT (n)-[:HAS_LABEL]->(:RestoreRestoreConfig)
AND NOT (n)-[:HAS_LABEL]->(:ImportRestoreConfig)
AND NOT (n)-[:HAS_LABEL]->(:ExportRestoreConfig)
AND NOT (n)-[:HAS_LABEL]->(:BackupImportConfig)
AND NOT (n)-[:HAS_LABEL]->(:RestoreImportConfig)
AND NOT (n)-[:HAS_LABEL]->(:ImportImportConfig)
AND NOT (n)-[:HAS_LABEL]->(:ExportImportConfig)
AND NOT (n)-[:HAS_LABEL]->(:BackupExportConfig)
AND NOT (n)-[:HAS_LABEL]->(:RestoreExportConfig)
AND NOT (n)-[:HAS_LABEL]->(:ImportExportConfig)
AND NOT (n)-[:HAS_LABEL]->(:ExportExportConfig)
AND NOT (n)-[:HAS_LABEL]->(:BackupBackupJob)
AND NOT (n)-[:HAS_LABEL]->(:RestoreBackupJob)
AND NOT (n)-[:HAS_LABEL]->(:ImportBackupJob)
AND NOT (n)-[:HAS_LABEL]->(:ExportBackupJob)
AND NOT (n)-[:HAS_LABEL]->(:BackupRestoreJob)
AND NOT (n)-[:HAS_LABEL]->(:RestoreRestoreJob)
AND NOT (n)-[:HAS_LABEL]->(:ImportRestoreJob)
AND NOT (n)-[:HAS_LABEL]->(:ExportRestoreJob)
AND NOT (n)-[:HAS_LABEL]->(:BackupImportJob)
AND NOT (n)-[:HAS_LABEL]->(:RestoreImportJob)
AND NOT (n)-[:HAS_LABEL]->(:ImportImportJob)
AND NOT (n)-[:HAS_LABEL]->(:ExportImportJob)
AND NOT (n)-[:HAS_LABEL]->(:BackupExportJob)
AND NOT (n)-[:HAS_LABEL]->(:RestoreExportJob)
AND NOT (n)-[:HAS_LABEL]->(:ImportExportJob)
AND NOT (n)-[:HAS_LABEL]->(:ExportExportJob)
AND NOT (n)-[:HAS_LABEL]->(:BackupBackupProcedure)
AND NOT (n)-[:HAS_LABEL]->(:RestoreBackupProcedure)
AND NOT (n)-[:HAS_LABEL]->(:ImportBackupProcedure)
AND NOT (n)-[:HAS_LABEL]->(:ExportBackupProcedure)
AND NOT (n)-[:HAS_LABEL]->(:BackupRestoreProcedure)
AND NOT (n)-[:HAS_LABEL]->(:RestoreRestoreProcedure)
AND NOT (n)-[:HAS_LABEL]->(:ImportRestoreProcedure)
AND NOT (n)-[:HAS_LABEL]->(:ExportRestoreProcedure)
AND NOT (n)-[:HAS_LABEL]->(:BackupImportProcedure)
AND NOT (n)-[:HAS_LABEL]->(:RestoreImportProcedure)
AND NOT (n)-[:HAS_LABEL]->(:ImportImportProcedure)
AND NOT (n)-[:HAS_LABEL]->(:ExportImportProcedure)
AND NOT (n)-[:HAS_LABEL]->(:BackupExportProcedure)
AND NOT (n)-[:HAS_LABEL]->(:RestoreExportProcedure)
AND NOT (n)-[:HAS_LABEL]->(:ImportExportProcedure)
AND NOT (n)-[:HAS_LABEL]->(:ExportExportProcedure)
AND NOT (n)-[:HAS_LABEL]->(:BackupBackupFunction)
AND NOT (n)-[:HAS_LABEL]->(:RestoreBackupFunction)
AND NOT (n)-[:HAS_LABEL]->(:ImportBackupFunction)
AND NOT (n)-[:HAS_LABEL]->(:ExportBackupFunction)
AND NOT (n)-[:HAS_LABEL]->(:BackupRestoreFunction)
AND NOT (n)-[:HAS_LABEL]->(:RestoreRestoreFunction)
AND NOT (n)-[:HAS_LABEL]->(:ImportRestoreFunction)
AND NOT (n)-[:HAS_LABEL]->(:ExportRestoreFunction)
AND NOT (n)-[:HAS_LABEL]->(:BackupImportFunction)
AND NOT (n)-[:HAS_LABEL]->(:RestoreImportFunction)
AND NOT (n)-[:HAS_LABEL]->(:ImportImportFunction)
AND NOT (n)-[:HAS_LABEL]->(:ExportImportFunction)
AND NOT (n)-[:HAS_LABEL]->(:BackupExportFunction)
AND NOT (n)-[:HAS_LABEL]->(:RestoreExportFunction)
AND NOT (n)-[:HAS_LABEL]->(:ImportExportFunction)
AND NOT (n)-[:HAS_LABEL]->(:ExportExportFunction)
AND NOT (n)-[:HAS_LABEL]->(:BackupBackupConstraint)
AND NOT (n)-[:HAS_LABEL]->(:RestoreBackupConstraint)
AND NOT (n)-[:HAS_LABEL]->(:ImportBackupConstraint)
AND NOT (n)-[:HAS_LABEL]->(:ExportBackupConstraint)
AND NOT (n)-[:HAS_LABEL]->(:BackupRestoreConstraint)
AND NOT (n)-[:HAS_LABEL]->(:RestoreRestoreConstraint)
AND NOT (n)-[:HAS_LABEL]->(:ImportRestoreConstraint)
AND NOT (n)-[:HAS_LABEL]->(:ExportRestoreConstraint)
AND NOT (n)-[:HAS_LABEL]->(:BackupImportConstraint)
AND NOT (n)-[:HAS_LABEL]->(:RestoreImportConstraint)
AND NOT (n)-[:HAS_LABEL]->(:ImportImportConstraint)
AND NOT (n)-[:HAS_LABEL]->(:ExportImportConstraint)
AND NOT (n)-[:HAS_LABEL]->(:BackupExportConstraint)
AND NOT (n)-[:HAS_LABEL]->(:RestoreExportConstraint)
AND NOT (n)-[:HAS_LABEL]->(:ImportExportConstraint)
AND NOT (n)-[:HAS_LABEL]->(:ExportExportConstraint)
AND NOT (n)-[:HAS_LABEL]->(:BackupBackupProperty)
AND NOT (n)-[:HAS_LABEL]->(:RestoreBackupProperty)
AND NOT (n)-[:HAS_LABEL]->(:ImportBackupProperty)
AND NOT (n)-[:HAS_LABEL]->(:ExportBackupProperty)
AND NOT (n)-[:HAS_LABEL]->(:BackupRestoreProperty)
AND NOT (n)-[:HAS_LABEL]->(:RestoreRestoreProperty)
AND NOT (n)-[:HAS_LABEL]->(:ImportRestoreProperty)
AND NOT (n)-[:HAS_LABEL]->(:ExportRestoreProperty)
AND NOT (n)-[:HAS_LABEL]->(:BackupImportProperty)
AND NOT (n)-[:HAS_LABEL]->(:RestoreImportProperty)
AND NOT (n)-[:HAS_LABEL]->(:ImportImportProperty)
AND NOT (n)-[:HAS_LABEL]->(:ExportImportProperty)
AND NOT (n)-[:HAS_LABEL]->(:BackupExportProperty)
AND NOT (n)-[:HAS_LABEL]->(:RestoreExportProperty)
AND NOT (n)-[:HAS_LABEL]->(:ImportExportProperty)
AND NOT (n)-[:HAS_LABEL]->(:ExportExportProperty)
AND NOT (n)-[:HAS_LABEL]->(:BackupBackupRelationship)
AND NOT (n)-[:HAS_LABEL]->(:RestoreBackupRelationship)
AND NOT (n)-[:HAS_LABEL]->(:ImportBackupRelationship)
AND NOT (n)-[:HAS_LABEL]->(:ExportBackupRelationship)
AND NOT (n)-[:HAS_LABEL]->(:BackupRestoreRelationship)
AND NOT (n)-[:HAS_LABEL]->(:RestoreRestoreRelationship)
AND NOT (n)-[:HAS_LABEL]->(:ImportRestoreRelationship)
AND NOT (n)-[:HAS_LABEL]->(:ExportRestoreRelationship)
AND NOT (n)-[:HAS_LABEL]->(:BackupImportRelationship)
AND NOT (n)-[:HAS_LABEL]->(:RestoreImportRelationship)
AND NOT (n)-[:HAS_LABEL]->(:ImportImportRelationship)
AND NOT (n)-[:HAS_LABEL]->(:ExportImportRelationship)
AND NOT (n)-[:HAS_LABEL]->(:BackupExportRelationship)
AND NOT (n)-[:HAS_LABEL]->(:RestoreExportRelationship)
AND NOT (n)-[:HAS_LABEL]->(:ImportExportRelationship)
AND NOT (n)-[:HAS_LABEL]->(:ExportExportRelationship)
AND NOT (n)-[:HAS_LABEL]->(:BackupBackupLabel)
AND NOT (n)-[:HAS_LABEL]->(:RestoreBackupLabel)
AND NOT (n)-[:HAS_LABEL]->(:ImportBackupLabel)
AND NOT (n)-[:HAS_LABEL]->(:ExportBackupLabel)
AND NOT (n)-[:HAS_LABEL]->(:BackupRestoreLabel)
AND NOT (n)-[:HAS_LABEL]->(:RestoreRestoreLabel)
AND NOT (n)-[:HAS_LABEL]->(:ImportRestoreLabel)
AND NOT (n)-[:HAS_LABEL]->(:ExportRestoreLabel)
AND NOT (n)-[:HAS_LABEL]->(:BackupImportLabel)
AND NOT (n)-[:HAS_LABEL]->(:RestoreImportLabel)
AND NOT (n)-[:HAS_LABEL]->(:ImportImportLabel)
AND NOT (n)-[:HAS_LABEL]->(:ExportImportLabel)
AND NOT (n)-[:HAS_LABEL]->(:BackupExportLabel)
AND NOT (n)-[:HAS_LABEL]->(:RestoreExportLabel)
AND NOT (n)-[:HAS_LABEL]->(:ImportExportLabel)
AND NOT (n)-[:HAS_LABEL]->(:ExportExportLabel)
AND NOT (n)-[:HAS_LABEL]->(:BackupBackupIndex)
AND NOT (n)-[:HAS_LABEL]->(:RestoreBackupIndex)
AND NOT (n)-[:HAS_LABEL]->(:ImportBackupIndex)
AND NOT (n)-[:HAS_LABEL]->(:ExportBackupIndex)
AND NOT (n)-[:HAS_LABEL]->(:BackupRestoreIndex)
AND NOT (n)-[:HAS_LABEL]->(:RestoreRestoreIndex)
AND NOT (n)-[:HAS_LABEL]->(:ImportRestoreIndex)
AND NOT (n)-[:HAS_LABEL]->(:ExportRestoreIndex)
AND NOT (n)-[:HAS_LABEL]->(:BackupImportIndex)
AND NOT (n)-[:HAS_LABEL]->(:RestoreImportIndex)
AND NOT (n)-[:HAS_LABEL]->(:ImportImportIndex)
AND NOT (n)-[:HAS_LABEL]->(:ExportImportIndex)
AND NOT (n)-[:HAS_LABEL]->(:BackupExportIndex)
AND NOT (n)-[:HAS_LABEL]->(:RestoreExportIndex)
AND NOT (n)-[:HAS_LABEL]->(:ImportExportIndex)
AND NOT (n)-[:HAS_LABEL]->(:ExportExportIndex)
AND NOT (n)-[:HAS_LABEL]->(:BackupBackupSchema)
AND NOT (
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