Why can't the 303 course be redeemed?

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This topic has been translated from a Chinese forum by GPT and might contain errors.

Original topic: 为什么303课程兑换不了?

| username: 江湖故人

The main reason for the high CPU usage of TiDB is that the SQL execution plan is not optimal. You can use the EXPLAIN statement to analyze the execution plan of the SQL statement and optimize it accordingly. Additionally, you can check if there are any slow queries or large transactions that are causing high CPU usage.

| username: Billmay表妹 | Original post link

The newly issued vouchers are for redemption between January 1st and March 31st.

You can contact me to exchange the redemption code.

WeChat: billmay

| username: wangccsy | Original post link

I haven’t finished my free course yet. Is 303 a certification course?

| username: ShawnYan | Original post link

Yes, for specific details, you can refer to:

https://learn.pingcap.com/learner/common/notice/2c938083841005220184cca90f1f0000

For more information about PingCAP training and certification, please download the PDF version of the “PingCAP Training and Certification Manual” (updated on October 27, 2023)

| username: system | Original post link

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