Do I must use couchbase://?

avsej · April 23, 2016, 7:27am

Here you can find how actually schema handled in PHP and all other libraries which use libcouchbase under the cover

couchbase/libcouchbase/blob/52e2bf321aad5e4e426b0bb1c28c91419d15be41/src/connspec.c#L349-L381


#define SCHEME_MATCHES(scheme_const) \
strncmp(ctx.connstr, scheme_const, sizeof(scheme_const)-1) == 0 && \
(found_scheme = scheme_const)


if (SCHEME_MATCHES(LCB_SPECSCHEME_MCD_SSL)) {
    out->implicit_port = LCB_CONFIG_MCD_SSL_PORT;
    out->sslopts |= LCB_SSL_ENABLED;
    out->flags |= F_SSLSCHEME;


} else if (SCHEME_MATCHES(LCB_SPECSCHEME_HTTP_SSL)) {
    out->implicit_port = LCB_CONFIG_HTTP_SSL_PORT;
    out->sslopts |= LCB_SSL_ENABLED;
    out->flags |= F_SSLSCHEME;


} else if (SCHEME_MATCHES(LCB_SPECSCHEME_HTTP)) {
    out->implicit_port = LCB_CONFIG_HTTP_PORT;


} else if (SCHEME_MATCHES(LCB_SPECSCHEME_MCD)) {
    out->implicit_port = LCB_CONFIG_MCD_PORT;

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So it does matter, because the schema, and the port number which actually selected by it, determines the way how the cluster configuration will be retrieved from the server. HTTP in particular will select 8091 and configuration will be delivered via chunked HTTP connection, COUCHBASE will use binary protocol and more preferred.