This version is an important version which include some large changes.

The first important change is remove the old redundant codes about 1.x naming and double write relative codes. After changed, The 2.2.0 version will can't upgraded from Nacos 1.X server, only can upgraded from at least version 2.0.0. The changes will not effect the adapt for 1.X client request, users can still use 1.X client with 2.2.0 version.

The second important change is adding several plugins:

• datasource plugin, which added by Asoc 2022 project to support other DBs.
• custom environment plugin, which added by community to handle configurations of Nacos server, such as decrypt database password.
• connection limit plugin, which refactored from old limit module, to extend more abilities to protect Nacos server under high pressure.

The third important change is to enhance the beta feature Tracing plugin and batch register, which make them more easy to use.

Detail see:

feature

[#5863][#9331] Support batch register and batch deregister service. [#8308] Add v2 openAPI for nacos 2.0. [#8312] Support datasource plugins. [#8481] Support track tracing plugins. [#8694] Support prometheus http service discovery(prometheus http sd). [#9318] Support caseSentive for Ldap auth plugin. [#9366] Support Ldaps authentication.

Enhancement&Refactor

[#7930] Reomve old redundant codes about 1.x naming. [#9391] Optimization Chooser. [#9393] Make server stop auto when starting error. [#9414] Optimize fuzzy queries to make SQL more general. [#9415][#9449][#9466][#9497] Enhancement datasource plugins. [#9423] ExternalDataSourceProperties add isEmpty check to support external config. [#9459] Modify the method modifier of NacosApplicationListener to default. [#9471] Keep console query condition in configuration After return list config pages. [#9597] Keep console query condition in discovery After return list service pages. [#9615] Enhance client choose server node to request server more dispersed. [#9653] Refactor connection limit module to plugin.

BugFix

[#9334] Fix group_id data length different in many tables. [#9341] Fix can not create bean ldapAuthenticationProvider. [#9351] Fix instance count error in prometheus metrics. [#9367] Fix auth plugin's property 'token.secret.key' base64 decode error. [#9408][#9437] Fix console namespace list deploy problems. [#9461] Fix ClientWorker NullPointer judgement order. [#9474] Fix some instance is unhealthy after change to http health check. [#9478] Fix the chooser bug when all instances have a zero weight. [#9584] Fix console configuration query button overflow hidden problem. [#9586] Fix problem of deregister instance failure after service expired metadata auto clean.

Dependency

[#9652] Upgrade ui dependencies to fix some depend vulnerability.