LWrangler can give it to you yes, your query responses also contain that information in the
meta object, and the dashboard will show it soon as well.
MThanks again. For now need to provide the hint and chk location afterwards. Would be nice if in future that hint is more binding too.
HIf you are referring to DOs, they do support Jurisdictions, which means it isn’t a hint, but a guarantee that they run in a given region
CDoes D1 provides some proper error codes?
so far I'm doing:
but seems super hacky
so far I'm doing:
but seems super hacky
Mwhat is DO? durable object? we were talking about D1 not sure if there is relation
RHello, is there any plan to create an official driver to manage D1 databases via third-party database managers like DBeaver?
PHi All. I'm working with the D1 Database by using the Prisma, Wrangler in the NextJS App Router Fullstack. I have a problem when I need to get the env to bind it into the Prisma D1 Adapter. Does anyone have experience with that? Could you help me with this? Thanks all
HYes, it is Durable Objects. D1 Databases are Durable Objects with some utils to make it easy to query externally
HDurable Objects do support Jurisdictions, which force the location. Not sure whether D1 will have the same(don’t think it exists yet)
CIm sure someone has asked this before but I couldn't find anything about it. The D1 free tier says there are 25 billion rows read per month included. Does this only count the rows that the query returns? Or does it count rows that were checked and not returned as well?
LOr does it count rows that were checked and not returned as well?All rows read are counted. From indices, non-indices, views, etc.
COk
1D1 Free tier is 5million row reads per day, not 25bil per month. 25bil is included in the $5 Workers Paid plan
DI know that during a D1 export the database is unavailable for other requests (https://developers.cloudflare.com/d1/best-practices/import-export-data/#known-limitations).
A couple of questions on this:
A couple of questions on this:
- What's a reasonable maximum time for an export to take? If a database hits the 10gb limit, how long would exporting it take?
- Will this limitation go away when read only replicas become available?
YWhere can I request to update the error message for D1 response errors?
L- This really depends on each database. How many millions of rows, how big each row is, etc.
- Probably reads could still flow through with the replicas, but the primary will still be blocked. We have some work streams to improve the import/export APIs over the next few months.
1Replicas that don't exist publicly yet right?
DOn 1, makes sense. Can you give any guidance on the possible ranges of times the db might be blocked? Seconds, 10 minutes, 30 minutes?
DIs it possible to export a backup from Time Travel? Snapshots must be on disk somewhere?
RHello, I think this message has gone unnoticed among others. Is there any plan to collaborate with an existing database manager to support d1?
Spretty sure drizzle studio works?
BYou can use Outerbase to view your D1 databases
MHi my d1 all of a sudden went from less than 10m rows read to over 38B in 5 days.
I didn't make any change and still uses the same data, not sure what's causing it.
It keeps on increasing, is there any way I can fix this. Please
I didn't make any change and still uses the same data, not sure what's causing it.
It keeps on increasing, is there any way I can fix this. Please
IDouble-check that whatever Worker is querying the D1 DB isn't getting flooded with requests, perhaps?
IAnd/or that you haven't accidentally leaked an access token that someone's using to hit the API
MThis is the query that is being shown in the metrics with the higest count, multiples of it. And that query is only found in my cloudflare pages.
is there any way I can check to see where the D1 queries are coming from aside that, or a way to fix it, it's been that query for months with no issues
is there any way I can check to see where the D1 queries are coming from aside that, or a way to fix it, it's been that query for months with no issues
MI found the query already, using the d1 insights wrangler, thank you!
XHi, I'm using Cloudflare D1 with Drizzle ORM and want to batch multiple queries in a single transaction. However, I need
Thanks in advance! :)
newUser.id and account.id from the first two queries to use in the third one. Since the queries are in an array, I can't assign these values to a constant. Is there a way to achieve this within a single batch, or do I need to split it into two?Thanks in advance! :)
AHello, I'm using cloudflare D1 with drizzle orm from 28th February 2025, I am getting an error while applying migration changes to the databse can anyone please help me
$ bun wrangler d1 migrations apply megha-backend
wrangler 3.111.0
--------------------
*** Received structured exception #0xc0000005: access violation; stack: 7ffbf9c52c0f 7ff66a13147a 7ff66a131543 7ff66a0d84ac 7ff66a0d8457 7ff669627a8e 7ff669627d9f 7ff6680a3316 7ff66975200f 7ff6697591b6 7ff669752513 7ff6697591b6 7ff66974feac 7ff668091ee5 7ff66acaeb5f 7ffc142fe8d6 7ffc15bbbf2b
X [ERROR] The Workers runtime failed to start. There is likely additional logging output above.
$ bun wrangler d1 migrations apply megha-backend
wrangler 3.111.0--------------------
*** Received structured exception #0xc0000005: access violation; stack: 7ffbf9c52c0f 7ff66a13147a 7ff66a131543 7ff66a0d84ac 7ff66a0d8457 7ff669627a8e 7ff669627d9f 7ff6680a3316 7ff66975200f 7ff6697591b6 7ff669752513 7ff6697591b6 7ff66974feac 7ff668091ee5 7ff66acaeb5f 7ffc142fe8d6 7ffc15bbbf2b
X [ERROR] The Workers runtime failed to start. There is likely additional logging output above.
MI'm seeing lots of D1 errors for brief periods yesterday and today, but there's nothing on the D1 status page. I get
D1 DB storage operation exceeded timeout which caused object to be reset and D1 DB is overloaded. Too many requests queued.MMy database is about 30Mb, it gets ~50k write queries per 24 hours and I believe is well indexed
MIs anyone else seeing this?
JError rates on D1 are higher than most people would like. I've requested the team to document this so people understand how they should use D1 a bit better at https://github.com/cloudflare/cloudflare-docs/issues/18485, but the general wisdom unless you're seeing 100% failures is just that it's expected and you should retry your queries. Not great, I know, but sadly that's all we got for now.
Si have not ran into this but im assuming queries arent retried automatically either right? good to know
JThey are not, no, you would need to retry them yourself or implement them via another Cloudflare product that can do retries in failure conditions like Workflows, Queues, etc.
Odoes running a batch block the db and prevent other queries from running?
Update: Yes, very much so
Update: Yes, very much so
1Any plans to add sub-query support to generated columns, specifically when doing JSON querying? Being able to match an object from a list of objects and generate a column from that would be cool
⚙#Complexity of scaling D1 in production with current limits? (10GB/db)
⚙Posted this in the forum. If anyone knows the solution to this problem I'd love to read up more about it
TI created a virtual FTS5 table. If I want to reduce rows_read when using ORDER BY, what approach should I take?
NHow can I reduce the 300-400ms latency of Cloudflare Workers when using D1 in free plan?
Nconfused between normal and smart placement
Atheres some explanation on smart placement here: https://developers.cloudflare.com/workers/configuration/smart-placement/
Abasically if you enable smart placement, cloudflare will try to place the worker closer to the database rather than closer to the user, which can help reduce database latency
Aalso,
meta.duration in the response object might be useful to look at, as it shows the time that ONLY the query took. If it is signifigant, consider re-evaluating the query you are running, and/or make sure you are using indexesNThanks for the help 
LThe
Also, when reporting issues, putting your database ID is always helpful, otherwise we can't really help with abstract reports. In most cases this error is reported, it's a user error with a slow query or a query without indexes, so help us to help you
storage operation exceeded timeout which caused object to be reset is an error specific to slow user queries. What query were you trying to run? How often do you run this, and how often do you get this error?Also, when reporting issues, putting your database ID is always helpful, otherwise we can't really help with abstract reports. In most cases this error is reported, it's a user error with a slow query or a query without indexes, so help us to help you
LSame as my other reply. Database ID and period this was happening?
Queries number across a whole day is not very relevant for this overload error. Overload error is usually because of sudden spikes, not because of total load across a day.
Queries number across a whole day is not very relevant for this overload error. Overload error is usually because of sudden spikes, not because of total load across a day.
MThanks for getting back to me! Database ID is 31174a64-6897-47f9-8364-644637f90c40. Sentry shows
DB is overloaded errors on 2025-02-28 around 14:26-14:33GMT, and storage operation exceeded timeout errors around 2025-03-01 14:33 GMT. I don't know exactly which queries were associated with the errors, but the Query Latency metrics show the P95 latency can't have been higher than 8-10ms. My most frequently run queries have a P95 latency of 0-3ms.