Looking for an Expert Neo4j 2.2 Who can help folowing items

[fssudhish]

1. Need to optimize Neo4j 2.2 configuration to fix query cache problem
2. Migrate neo4j2.2 Data to latest version. (Do we need to change all queries in application once we migrated?

[Joel]

I imagine that I'd do #2 first, by leaving the production db online, and upgrade a copy to work out any issues.

On the upgraded db copy test each of the queries.

If the upgrade is certain, then I'm pretty sure I would do the upgrade first before working on #1, unless it is a critical issue that can't wait.

Are you planning to upgrade to 3.5.x or 4.x?

[sameerG]

fssudhish:

Migrate neo4j2.2 Data to latest version

• Neo4j does not support downgrades. If the upgrade is not successful, you have to do a full rollback, including restoring a pre-upgrade backup.
• A Neo4j upgrade must be performed as an isolated operation. If you are planning to upgrade from a single-instance installation to a Causal Cluster, this must be performed separately from the upgrade to 4.1.
• In order to further minimize risk, it is recommended that while upgrading, you do not switch from Community Edition to Enterprise Edition, change configuration, perform architectural restructuring, or similar tasks.