Magento 2 - Table report_viewed_product_index slowed down after so many page views

Question

The table report_viewed_product_index stores the page visits of every users against their user ids.

After 1 year of user, when users have huge data of page views product detail page is slower for some users.

Any kind of help would be highly appreciated.

Edit

I have enabled query log on server, and observed this:

• When I open product page there are 6048 queries
• After truncating table report_viewed_product_index the queries on product page are just 820
• Note: In both cases, query count on report_viewed_product_index are just 5

Answer 1

I have done some test cases on data to observed behavior of slow loading.

I have figured out that when some old customers that has more browsing data is experiencing slow page load. So I have no other option but to TRUNCATE this table.

Here are the test cases that I have performed:

Test Case 1:

• full records in report_viewed_product_index table
• Customer logged in
• Queries on product page: 6052
• Queries on table report_viewed_product_index: 5

Test Case 1 (Repeat):

• full records in report_viewed_product_index table
• Customer logged in
• Queries on product page: 6149
• Queries on table report_viewed_product_index: 5

Test Case 2:

• full records in report_viewed_product_index table
• Customer not logged in
• Queries on product page: 546
• Queries on table report_viewed_product_index: 5

Test Case 2 (Repeat):

• full records in report_viewed_product_index table
• Customer not logged in
• Queries on product page: 546
• Queries on table report_viewed_product_index: 5

Test Case 3:

• empty records in report_viewed_product_index table
• Customer logged in
• Queries on product page: 1045
• Queries on table report_viewed_product_index: 5

Test Case 3 (Repeat):

• empty records in report_viewed_product_index table
• Customer logged in
• Queries on product page: 850
• Queries on table report_viewed_product_index: 5

Test Case 4:

• empty records in report_viewed_product_index table
• Customer not logged in
• Queries on product page: 694
• Queries on table report_viewed_product_index: 5

Test Case 4 (Repeat):

• empty records in report_viewed_product_index table
• Customer not logged in
• Queries on product page: 546
• Queries on table report_viewed_product_index: 5

Answer 2

According to the answer of Shoaib Munir:

You need to truncate report_viewed_product_index table with this command

TRUNCATE report_viewed_product_index

User experience is more important than reports for management :)
So it is better to truncate this table and get view from google analytics