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**4.x to 5.x is a major breaking update, read the 5.x main-changelog [here](https://github.com/Ghost-chu/QuickShop-Hikari/releases/tag/5.0.0.0) before upgrading from 4.x to 5.** *This is a hot fix for 5.0.0.5 version.* ## Hot fix * Fixed SQLException when trying to fetch players offline messages from database. --- # 5.0.0.5 ## New Features * Added new `backup-policy` settings. * This option allows the user to control the triggering of database backups * Rate-limit for player block clicking * This is a very basic frequency limit, QuickShop will only respond to a single click event from the same player within 125 milliseconds. * This helps to solve the problem of players maliciously clicking on squares quickly, causing QuickShop to look up, parse, and calculate store data frequently, resulting in tick-time increases * Shop locks are not limited by this frequency; they are fast enough to find without excessive computation, and in redstone environments will even use cached lookups without causing computational stress. *We're planned apply the rate-limit to more modules in future to avoid affect server performances by players maliciously actions.* ## Optimization * The players offline messages are not persistent in memory but fetch from database in async. * We note that on large networks huge amounts of transaction logs may be generated, which are loaded into memory at startup and increase RAM usage. * However QuickShop will always perform the same operation on the database while manipulating the content. This made the in-memory copy meaningless, so we moved it all to the database and read and write asynchronously when needed. ## Changes * QuickShop-Hikari nolonger automaticlly backup H2 databases on startup. * QuickShop-Hikari nolonger automaticlly backup databases on shop purges. ## Bug Fixes * Fixed debug logs in paste is all empty lines. * [ADDON] Fixed discount addon lost all discount codes after server restart.