Elasticsearch Search Engine

  1. Cluster Operations and Administration
    1. Cluster Health Monitoring
      1. Health Status Levels
        1. Green Status
          1. Yellow Status
            1. Red Status
            2. Health Indicators
              1. Cluster State Information
                1. Shard Status Monitoring
                2. Cluster APIs
                  1. Cluster Health API
                    1. Cluster State API
                      1. Cluster Stats API
                        1. Cluster Settings API
                          1. Pending Tasks API
                            1. Remote Cluster Info API
                            2. CAT APIs for Administration
                              1. CAT Health API
                                1. CAT Nodes API
                                  1. CAT Indices API
                                    1. CAT Shards API
                                      1. CAT Allocation API
                                        1. CAT Count API
                                          1. CAT Fielddata API
                                            1. CAT Master API
                                              1. CAT Nodeattrs API
                                                1. CAT Pending Tasks API
                                                  1. CAT Plugins API
                                                    1. CAT Recovery API
                                                      1. CAT Repositories API
                                                        1. CAT Segments API
                                                          1. CAT Snapshots API
                                                            1. CAT Tasks API
                                                              1. CAT Templates API
                                                                1. CAT Thread Pool API
                                                                2. Node Management
                                                                  1. Node Information API
                                                                    1. Node Stats API
                                                                      1. Node Usage API
                                                                        1. Hot Threads API
                                                                          1. Node Shutdown API
                                                                          2. Shard Management
                                                                            1. Shard Allocation Strategies
                                                                              1. Allocation Awareness
                                                                                1. Allocation Filtering
                                                                                  1. Disk-Based Shard Allocation
                                                                                    1. Shard Rebalancing
                                                                                      1. Manual Shard Allocation
                                                                                        1. Reroute API Usage
                                                                                        2. Cluster Scaling Strategies
                                                                                          1. Horizontal Scaling
                                                                                            1. Adding Data Nodes
                                                                                              1. Adding Master Nodes
                                                                                                1. Node Decommissioning
                                                                                                2. Vertical Scaling
                                                                                                  1. Resource Allocation
                                                                                                    1. Performance Impact
                                                                                                    2. Capacity Planning
                                                                                                      1. Auto-Scaling Considerations
                                                                                                      2. Backup and Recovery
                                                                                                        1. Snapshot Repository Setup
                                                                                                          1. File System Repository
                                                                                                            1. S3 Repository
                                                                                                              1. Azure Repository
                                                                                                                1. Google Cloud Storage Repository
                                                                                                                  1. HDFS Repository
                                                                                                                  2. Snapshot Creation
                                                                                                                    1. Full Cluster Snapshots
                                                                                                                      1. Partial Snapshots
                                                                                                                        1. Incremental Snapshots
                                                                                                                        2. Snapshot Management
                                                                                                                          1. Snapshot Listing
                                                                                                                            1. Snapshot Deletion
                                                                                                                              1. Snapshot Status Monitoring
                                                                                                                              2. Restore Operations
                                                                                                                                1. Full Cluster Restore
                                                                                                                                  1. Selective Index Restore
                                                                                                                                    1. Cross-Cluster Restore
                                                                                                                                    2. Snapshot Lifecycle Management
                                                                                                                                      1. Automated Snapshot Policies
                                                                                                                                        1. Retention Policies
                                                                                                                                          1. Snapshot Scheduling

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                                                                                                                                      7. Aggregations and Analytics

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                                                                                                                                      9. Performance Optimization and Tuning