Reading from two shards using ProxySQL
I have a table that has been sharded between two machines, and the same table on each machine holds different table (not replicated).
With ProxySQL,how can I create a mysql_query_rule that allows a client to perform a SELECT on both tables at the same time in order to display all data from both machines?
Or if I perform the query as:
select * from table_name where id=5
Then how would ProxySQL know which shard (machine) has the record with id=5?
mysql-5.7 sharding proxysql
add a comment |
I have a table that has been sharded between two machines, and the same table on each machine holds different table (not replicated).
With ProxySQL,how can I create a mysql_query_rule that allows a client to perform a SELECT on both tables at the same time in order to display all data from both machines?
Or if I perform the query as:
select * from table_name where id=5
Then how would ProxySQL know which shard (machine) has the record with id=5?
mysql-5.7 sharding proxysql
add a comment |
I have a table that has been sharded between two machines, and the same table on each machine holds different table (not replicated).
With ProxySQL,how can I create a mysql_query_rule that allows a client to perform a SELECT on both tables at the same time in order to display all data from both machines?
Or if I perform the query as:
select * from table_name where id=5
Then how would ProxySQL know which shard (machine) has the record with id=5?
mysql-5.7 sharding proxysql
I have a table that has been sharded between two machines, and the same table on each machine holds different table (not replicated).
With ProxySQL,how can I create a mysql_query_rule that allows a client to perform a SELECT on both tables at the same time in order to display all data from both machines?
Or if I perform the query as:
select * from table_name where id=5
Then how would ProxySQL know which shard (machine) has the record with id=5?
mysql-5.7 sharding proxysql
mysql-5.7 sharding proxysql
edited 29 mins ago
DixonCh
33
33
asked 17 hours ago
giogiogiogio
34
34
add a comment |
add a comment |
0
active
oldest
votes
Your Answer
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "182"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fdba.stackexchange.com%2fquestions%2f231901%2freading-from-two-shards-using-proxysql%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
0
active
oldest
votes
0
active
oldest
votes
active
oldest
votes
active
oldest
votes
Thanks for contributing an answer to Database Administrators Stack Exchange!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fdba.stackexchange.com%2fquestions%2f231901%2freading-from-two-shards-using-proxysql%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown